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?* mmm-a- 1:34 ..., auwst 17. 1$)70 superseding mil-a-8623a april 12, 1957 federal specification adhesive, epoxy resin, metal to metal structural bonding ?1?ms specification was approved by the commissioner, federal supply service, geneml sertices administmtiofh for the we of all fedeml agencies. 1. scope and classifica~on 1.1 scope. thin specification covers epoxy resin adhesives for structural bondings such as the fabrication and repair of airframe parts, components, id other applications requiring bonding of a similar 0m1m%, (see 6.1) -. i ( 1.2 ?be furnished in the i classification. following types adhesives covered by this specification shall as specified (see 6.3): type i - room tempemture setting (see 3.3.2.1. 1). type h- lntermeciiate temperature setting (see 3.3.2.1. 2). ~ ~ - high temperature setting (see 3.3.2. l. 3). 2. applicable documents 2.1 the following apectfications and stan&rds, of the issues in effect on me of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: federal swc ifications: c)q-a-2s0/5 - aluminum alloy, alclad 2024, plate and sheet. ?it-i-735 - isopropyl alcohol . tt-s-735 - standard test fluids; hydrocarbon ppp-b-566 - khes, folding, paperboard. free datasheet http:///
MMM-A-134 federal sl~-i ficatiuns: (c?ont ?d) ppp-b440 - ppp-d-665 - -. ppp-&676 _ ppp-c-96 _ federal standards: fed-std-123 - i%d. ?xwt tiethod - std. no. 141 fed. test method c std. no. 151 fed. test method - std. no. 173 l!oxes, wood, (:lciltcd - plywood. bus, fiberbcxird. dnxes, fiberboard, corrugated, triple wall. box, paperboard, hfetal stayed (inchdhg stay hhterial), boxes, setup. cans, metal, 28 gage and light&. marking for ~mestic shipment (civtlian ageftcie8) l%itmj vhmlshl lmqtibr abd relatud materials, meth?a of bispkctton, metals, test methods. adhesives, methoda of !hhplm&, ahd t?esttn@ testing l (activities outside the federal government may obtain copies of federal swcificat ions and stan& rds as outlined under general information in the index of federal specifications and standards and ut the prices indicated in the index. the index, which includes cumulative monthly supplements as issued, is for sal~ on a subscription basis by the superintendent of rxuments, u.s. government printing offic 2, washington d, c. 20402. (single copies of this specification :md other product specifications required by activities outside the federal government for bidding purposes are available without charge at the gene ~dl services administration regional offices in bd.on, new york, atlanta, chicago, kmsas city, mo. , fort worth, denver, san francisco, los angeles, seattle, and washin~on, 1). c. \ federal goverrunenl activities may obwln copies of federal specifications :ind stanci:~rds and the index of iederal spet?ifications and standards from established distribution points !n their agencies. ) free datasheet http:///
., ,. i= . . . . . . . 4 l mmm-a-n4 military s pscf fications: . . mil-h-560ti mil-a-9067 military standarde: mil-std-l 05 mil-stlk129 hyfbulic fluid, petroleum we, airc-~ missile, and ordnance adhesive bonding, j%oou8s ti inspecuon p.equire- ments for sampling proce&res and tables for inepectioo by attributes marking for smpnent and storage (copies of spscifi-i-, s-*, dm~, ad publications required by euppliere in camectioo with specific proourexnent funetioas sbuld be *ined from tbe procuring activi~ or 88 directed by the contracting officer. ) 2.2 other publications. the following cbcuments form a pa-of this apecificatlon to the extent specffied herein. unle8s othewise indicatw$ the issue in effect on date of b~tation for bids or request fir propl shall apply. american society for t-g and materiaw as~ d1062-51 cleavage strength of metal to metal adhesive bond8 (auwation for conies of astm stamkmfs should be xidressed to the american soci& for testing and materials, 1916 race street, philadelphia, fennsylwmta 1s1 w. united states of america standaiux insitiute usas ms s-cc texture , (applioatton for copies of usas stindards should be addressed to the united sta- of america standarda xnstitute 10 east 40th street, new york, new york 10016 or from tbe american society of mechanical engineers order department, united engineering ceder, 345 east 47th street, new york, new ygrlc 10017. ) uniform classkf?xca?t!on committee uniform freight ciaasification (application for copies should be addressed committee, 202 union sbtion, 516 west jackson to the uniform classification bouienrd, chicago, illinols 60g06. ) 3 free datasheet http:///
j . MMM-A-134 ijatlonal classification hard. national motor freight classification .!. (application for copies should be addressed to the american tmckhg a8sociation8, inc., 1616 p street n. w., washinirton, d. c. 20036. ) 3. requirements 3.1 qudffication. the adhesive furnished under this spcifiostion shall be a product which is cplified for listing on the applicable qualified product list at the ttme set for opening of bids (see 4.5 and 6.4). . . . . . . 3.2 material, the adhe6ives shall contain thermosctting resin of the epoxy ~ as the basic ingredient. fillers may be included. except as other wise specified by the procuring agency, there should be no restrictions on the physical fomns (such as liquid, film) used in the adhesives provided they meet tix applicable requirements specified herein. adhesives shall be non-corrosive to t} metal surfaces being bonded. . . 3.2.1 type i and type h. these adhesives shall be two-part rnateri: consisting of the adhesive base and an activator which may be an amine type ma*rial. 3.2.2 type ih. this adhesive shall be furnished as a one part material either film or wet form. the activator shall be incorporated into the base adhesive. 3.2,3 liquid form. adhesives in liquiti form shall mix readily to a smooth solution or suspension of a consistency suitable for application and 0~11 ? free of lumps. the components shall not settle out during a working period of eight hours, 3.2,4 film form. adhesives in th film form shall consist either entirely of adhesive or a carrier impregnated with adhesive. the material and treatment of the carrier shall be designated. if neces=ry, an activating mlvenl shall be furnished and used with adhesive in film form. * - 3,2.5 formulation changes. the adhesive shall be approved only for the formulation which has passed the qualification tests and shall be used by the fabricator as approed. any changes by the manufacfurvr, such as the addin of pigments, hardeners, or fillers, or rh~ging the type! or the mt?thod of 4 free datasheet http:///
l. \. > -. , . . . ,?. +. ., j? mmbf-a-134 manufact~re, changes in formulation of the base resin, of l y other chahgm, shall be cause for designating the adhesive as a new product which shall not be - considered approved. the changed adhesive s!wu be given a new cmie number and bhnll he resubmitted for approval uncle r this tymclflcnt ion. recommondationa of the manufacturer for changea in the instruction sheet should be submitted to the qualifying activity for approval. 3.2.5.1 code number. the manufacturer shall designate each l dheoive by a code number which shall be used to identtfy tb l dtesive. a trade nam, if accompanied by a co& number, may also be used. 3.3 working characteristics. 3.3.1 application life. the application life of the adhesives when mixed and ready for use at 73. 5? t2? f. (23? tl? c.) shll be s minimum of 1/2 hour for type 1, 2-1/2 hours for type ii, and 1 year for ~ xxi. type 1 ad type adhesives dmil be considered to have reached the end of their working life wbett viaoosity reachea 160,000 centlpoiaes (see 4.6.3.2). 3.3.2 curing time. unless otlwwise approved by the procuring xx actldty, tk curtng time,- tempemture, and pressure shall b tit~n tb mrmititimf specified kreta. 3.3.2.1 curing time and tempemture. 3.3.2.1.1 ~ l when subjected to a texnperswre d@ to exceed ltkl? f. (74- c.) l t the bondbg line, tlm type i adbaive shall cure in 1 hour. at a hn- peratu~ of 86? ?2? f. (30? *1.1* c.), b cure time ddl not exceed 7 dayb. 3.3.2.1.2 type 11. a period of two hours maximum at a temperature not to exceed 210 *o f. (99 ? t] l c.) shall be required tor type 11 adhesive to harden at the bond line. this shall be foi1owed by a period of 7 days at a tem- perature of 73.5 l y2? f. (23 l 21.1 l c!. ) to effect complete curing of tk type 11 adhesive. 3.3.2.1.3 type iii. a bond line temperature of 210? f. (99? c.) is required to harden tbe type ill adhesive. mtimum cure ttme for type 111 shall be 7 lmurs at a temperature not exceeding 350? f. (177 c.). 3.3.2.2 curing pressure. the pressure required for curing tbe bonded test panels &scribed in this specification shall not exceed 10 pounds per square s free datasheet http:///
. . . . jumm-a-134 inch. w i adhesive sh~l-be -pb)e of curiq? and m~m -tisfactory bonded joints l s described within this specification when only oontact presaura is applied during tlw period of cure. 3.3.3 storage 1 ife. the adhesfves as furaished by the manufacturer shall be capable of conforming to the minimum shear streagth requirements at ?3.5? 22? f. (23 ~.1? c.) and at 180? xi!? f. (82 tl.1? c.) and tot& requin- rnents for application iifc after storage for one year at a temperature not exoeeding 86 ?2? f. (30? z1. 1s c.) at standard test conditions in the absence of sunlight. (see 4.5.5 .11. j . 3.4 m echanica.1 properties. mechanical properties of test speci- mens prepared and tested as specified in s~ction 4 shall conform to th respective requirements iisted in table 1. 3.4.1 cleavage strength. thb cleavage strength of tbe adksive shall be a minimum of 1000 pounds for type i and type ii, and a minimum of 1500 pounds for type ill when tested in accordance with 4.5.5.10. 3.5 insttmctlon sheet. tk manufacturer shall provide a dated, coded, and titled instruction sheet with the test report supplied whea requesting qualification (see 4.5. 4) and also with each shipment of adhesive (see 5.1.3) out- lining instmctions for its use. the instruction sheet shall include the following information: (a) (b) (c) ((i) manufacturer?s description of the base polymer, modifier, filler and p:~ent, if any, used in m adhesive. solvent (if required) should aiso be included. m=imum usable storage and pot life of the adhsive, with and without the addition of activabrs at 73.5? =? f. (23 l ?1. 10 c. ) and at various temperatures between 32? f. (o* c.) and 98.6? f. (37? c.). the @ life of adhesive after the addition of the activator, shall be based on definite quantities of the adhesive. mixing instructions including recommended type and m r- centage of activator, minimum, and maximum percent of activator allowed, and temperature control necessary when mixing and thinning. complete recommended pre-bonding treatments and metal cleaning proucsses including proportions of materxds necess:ry to prepare cleaning media. 6 free datasheet http:///
tast no. prodmty table 1. mechanical properties of bonded joints tonxtix duxr tmdlx 9ttxu t.ndlv dwr tatxih shoxr cmp-ruptur9 l trmgth crap-ruptura strwtgth ?dtiuo stron@h tondio dtoxr tauita choxr u__ 11 twmilx chcar t-d comdtttom of txzt zimnals normal tomperxtu~ 7s.s*22*f, (22%1 .jec. ) co mtnutox l t mow-f. {71*c. ) 00 minutmx at tso%vr. (tx?c. ) 30 titttm l t -s7@ izw. (-5sw1. 1*c . ) 20 dlinuto@ m 1so%?2*f. ($3.3e21.1*c. ) 30 mintttox l 47**20p . (-wil.l*c.) normx2 tsmporoturs 73.5%2-f. (2w*1.1oc.) normxl tomporxtttro 7s. s**f. :: s%:, l* c.) hrmmi tompmmtura 73.5%2*?, (22921 .!?c. ) nortnol txmpxrxtum ?2.s%2??. (23w. i*c. ) l m? tmm9a0n for ?s0 hour9 in xatt-wata sprxy ma tmus ocaxretod tkrmxi tompormtttre ta. s%2*?. (2s%1 . 1*c, ) l ftw? bmordmn for 7 dmp in row0c41m fttddm of tabk ii ~/ no. of l -* sob tootod 1/ - 6 6 6 8 s c 6 1s 6 6 6 text twpor9turm9 7s .s**2~f. (23*2201?c. ) 73.5.22*f. (z3%2.1?c. ) -67%2??. (-55 w.l*c. ) 180%2v . (ss.3@sl.l*c.l +.**fo (-ssw.l*c. ) ts. sw*r, (z3%1.12c. ) io*2?f. (cs.2%1.1*c. ! 73. s*22gf. (23%1 .lc. ) 72. v:2*f. (23%1 .1-c.) 73.5%?*?. (23%1 . 1*c. ) 7s. sw2*f. (2$% l. i*c. ) pmrx~aph mfwmncx 4.s. s.1 4.s.5.1 4.8. s.3 4.s. s,8 4.s.5.3 4.6.s. s xttd 4.5.s.7 4.5. s.0 amd 4.s.s.: 4.s. s.4 4.s. s.9 4.5.5.9 4.s. s.9 i ,2). of tho wnitnuui l v.rage strength rcquitwmnt (psi) al 2yp2 1 ~1 type 11 ~/ type u1 ~/ 2,s00 g/ 2.s00 ~1 2,s00 2 ,s00 ~1 2, soo gl 2 ,s00 1.*oo 1,000 2,500 i ,280 ~/ 1 ,2s0 it 1. soo ~1 1. soo 2.s00 2. soo 1,600 1.s00 1.400 m houu, o. 02s inch (max. ) d. fornmtion 300 300 i 300 200 ttourx, o. 02s inch (max. ) dxformxtion 6s0 2, soe ~1 2,000 2,400 i ~ of th. c l pwimens, 2 shoil bx f- l och c tho ~tc~ of ~wo (4. bdctt*8 of l dhexiv* (4.5.2). ihd m f?fmt nch of !hc th. ?vwx~ strxttgth daotl moxt th. rompocttw minimum average wui??omen t, xnd tho strmn~h of l ny l pdmono, ! 2,2s0 3/ 2,000 2,s00 600 2.2s0 ii 2.000 2.500 lndtvtdud spocimon thxtl bx not ioxx tfi so at of thix minimum l vwxgo roqu-nt. 2 temt8 l pgliable to typos 1, 11. ond ill adhodvmx tm to k madx with l iumtnurn-dtoy spwimmtm (toe 4.41. 3 th.se mwngth roquitwwm doo l pply to atoram ufo t-ts {.- 4 .s .s. 11). ~ see tnbte ii 7 free datasheet http:///
mmm-a-iit4 - . . (e) (f) (g) (h) 44 \ \?j o ) (k) application instructions including caea8ing procedure-, spread method, spread rote, number of coata, weight range, application tem~rature and relative humdt@, acoaptable bond-ltne thickness rsngo before and after cure, l nd method of cleaning equipmoti. maximum allowable open aseemb]y time and temperature- humidlty controls and protective measures necemary duriug storage for adhesive-coated metal prior to aseembiy. mwcimum allowable cloned assembly time and temperature- humidity controls and protective measureu necessary during amrage for adbssive-coatud azul assembled parts prior to cum . typical time, temperature, and premure for each segment of the complete curing cycle giving maximum l nd mlaimum limits for each conditiou. maximum storage life (am 3.3.3). neceszary safety precautions to be observed throughout all operations. any other pertinent information relative to the use and stomge of the adhesive or curtng a~nt, or both. 4. q~ality asn?rance prov1s1ons 4.1 responsibility for inspection. unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. except as otherwise specified in the contract or order, the supplier may use his own or any otbr facilities suitable for t~ ~rfortnance of the inspection requirements cpecified lwreim unless dtaappmved b~? the government. the government reserves th right to perform any of t& inspections set forth in the specification where such inspections are deemed necessary to assure hat supplles and semices conform to prescribed requirements. 4.2 classification of tests. the inspection and testing of tb adhesive ohall be classified as follows ia} qualification tests (4. 5) ?b) qtia[ity conforma~ce tests (+. 61 free datasheet http:///
,. ,, ..- ,. , . . ,, >? ,. . . . . . . MMM-A-134 4.3 test conditions. 4.3.1 spectrnen conditioning. unless otherwise specified in the detmed test method, all specimens shall be conditioned at 73. 5? f 2 f. (23? $1.1 l c. ) and 50 t 4 percent relative humidity for a period of a l-at 7 days. other conditioning bhall be as prescribed in table l reparation of the tat pnela shall be tn ac- corcbmce w!th 4.4 and as described herein. fie open assembly period she , lm zero in the preparation of 1/2 of the requir=d panels and shali be 30 minutes or the msxtmum open assembly period specified by the mmmfacturer, if greater than 30 minutes, for the remaining gmels. 4.3.2 normal (room temperature condtttone). strength propertied shall he determined for room temperature adhesive at 73.5? k 2 f. (23 t 1.10 c.) no sooner than 10 minutes after specimens have reached equilibrium at such tempera- ture. if the validi~ of property values determined within this range is questiomble, the test shallthenbe repeatduar a *ndard 73. s0 %?o f. (23 ~1. 1? c. ) tempemture aod so ~4 perceti relative humkiity. ~imens shall thettbe teuted only after belrq exposes !or 7 days to this temperature and humidity. 4.3.3 elevated temperature conditions. conditioning of upscimos for elevated shear strength tests siudl require a suitable oven to rnsinhin the specimen within 2? f. (1. 1? c. ) temperature range of the test oonditioa requirement prescribed in table 1 prior to testing. 4.3.4 low tempemture condition. conditioning of the specimens for low temperature shear strength tests shall require a suitable conditioning chamber to maintain the specimen at -67?: 2? f. (-55? t 1.1? c.) fol a period of 30 minutes prior to testing. where prior conditioning at 160? f. (71? c. ) is required, the specimen shall be placed in the cold temperature directiy from the prior conditioning tempe=we. 4.3. s salt ureter spray conditions. resistance @ salt spray 6ha11 be detemined by exposure of the pnelm for 250 hours ib accordance with method 811.1 of fed. test method std. no. 151, except as hereby modified. the bonded test panels shall be vertically suspended from the top by means of glass hooks, waxed strings, or other nonmetallic materials through holes as ideated in figqre 1 with the piane of the panel prallel to the principal direction of flow of the salt sp~y through the chamber. individual panels 6hd1 not contact each ~er or any mefx~c matirial. 4.3.6 fluid immersion conditions. panels aail be immer6ed in the respective fluids li6ted in table ii for 7 days ~ 2 hours, except that 30 d6y6 ~ 2 hours shall be used for the water immersions. the temperature of these fluids should be maintained at 70 to 80? f. (21? to 27? c.). the water immersion panels 3hall also be suspended from the edge of a hole as shown in figure 1. the remahing pnels need not be so suspended. however, all panels must be so suspended or set in the containers as to ixtsure full contact of the respective fluids with the bonded 9 free datasheet http:///
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1 . ,, ,----- i i ,, i i . ,? .?. \. ., ,.. . . 6. ,. 1? . . ,. ,,, . . MMM-A-134 area of the test ~nels. faces of ~nels immersed in the same conwner of fluid shall not contnct each other: panels shall contact the container only at the panel comers or the %inch edges. table ~. fluids for panel imumraion tests fluids specifications immersion water dhniiled water 30 &ya t2 hou .3 isopropyl alcohol i tt-1-735 i 7 tiya 22 hours hydraulic fluid mxl-h-5606 7 &ys 22 hours ) (for ~o i and ii adhesives) .swn&rd test fluids tt-s-73s 7 daya ~2 hams 4.3.7 accelerated weathering comwoe8. - h- bat p~la shall be exposed to accelermed weathering for 168 krs in l ccordance with method 6152 of fe& test method std. no. 141. 4.3.8 all panels to be exposed to the conditions specified in 4.3.5, 4.3. & 4. s. 7 exce@ those spedma dcen from ths ends of ?k panels for mmtrol- strength test purposes (4. 5.5. 9) shail be immersed as boded (complete, preslotted, or prepunched) (see 4.4 and figure 1), edges unpm-~d ad prior to being cut into specimens. 4.4 preparation of taat pmla and sf=~a~ ~~s aa s~= ~ figures 1 through 4 shall be prepared in sufficient quantities (see 4.4. 1), from l given type of adhesive to futish the necessary number of specimens for all the tes~ a~ plicable to that particular type of adhesive listed in tabie l ~neln for testing types 1, 11, and 111 adhesives for all applicable table i properties shall be prepared fmm 0.063-inch clad 2024-t3 aluminum-alloy sheet conforming to qq-a-250/5. all edges of the metal panels and specimens which will be witbtn (or whkh wul bound) the joints shall be machtned true (without burrs or bevels and at right angles to faces) and smooth (rhr 140 maximum, in acco~me with usas b46. 1- 1966) before the panels are surface treated and bonded. the metal treating and boding procedure employed sldl be in accordance with the adhesive manufacturer?s instruction sheet. all test panels shown in figures 1 and 2 shall have an overlap of o. s00 t 0.010 inch except the figure 2 fatigue test panels, which shall have an overlap of 0.375 ~ 0.010 inch. %nels so pre~red shall be cut into 1-inch wide specimens for testing in accordance with the provisions of applicable tests. f%nels shali not be cut into specimens until at least 24 hours after bonding. .+luminum-alloy panels may lx sawed with a bandsaw, with the setting and spacing of teeth and operational speed l djusted to hold frictional heating of the bond to a minimum. 4.4.1 number of panels and specimens required for tests. 11 free datasheet http:///
d, . . ,. mmm-a-ln s 9 . t i i i [ 1 i e- i a 1 i , u) i i r 1 1 i i * i i i i 1 i t i i , a . l r ? free datasheet http:///
. . . -- , ., 1 j ., . !? , . mmm-a-1~ .? j=- 1 1 i 1? i ! .- ,, specimen 003 (alumwm k? f\gure 3 crt?ep rupturu test spectlllen shot- ~ng iocatlon of scribe ilnes free datasheet http:///
. . . . mmm-a- 134 . . . ,r .- 2 ,-- \ . +88 ?.005 .281 :,005 a i .i3d +?::: m?-! 1- 1 1- +,014 ~ ? 4 564 -. oob asseyibled panex. ---- i _l- 500 !. 010 7 l t?est specimen . di~nsio~s free datasheet http:///
. MMM-A-134 4.4.1.1 tensile shear and creep-rupture strength (tests nos. 1 through 7 of table i). three panels conforming to the dimensions and marking shown in figure 2 (with 1 / 2 inch lap joint) shail be prepared from each of three different batches of the adhesive being presented for qualification. each of the resultant 9 panels shall be cut as shown in figure 2 into seven l-inch wide spec- imens. each of the resultant 63 specimens shall be identified with the particular panel from which it was cut and with the particular batch of adhesive with which it was bonded so that any failure may be traced to either the adhesive or the mechanics or equipment of bonding. specimens of each of tests nos. 1 through 7 (when applicable) of table i and necessary retest specimens shaii be taken from the 63 specimens. respective test procedures and numbers of specimens to be tested by each procedure are specified in 4.5.5.1 to 4.5.5.3 and in 4.5.5.5 to 4.5.5.9. 4.4.1.2 fatigue (test no. 8 of table i). one panel conforming to the dimensions and marking shown in figure 2 shall be prepared with a 3/8-inch lap joint from each of the same three batches of the adhesive used in the prepara- tion of the panel specified in 4.4.1.1. each of these panels shall be cut as shown in figure 2 into seven l-inch wide (*o. 010 inch) (after machining) speci- mens. the edges of the specimens shall be machined smooth. selection and testing of these specimens shall be as specified in 4.5.5.4. 4.4.1.3 tensile shear after sale water spray, accelerated weathering, and fluid immersion (tests nos. 9, 10 and 11 of table i). eight panels shall be prepared as shown in figure 1 with each of the same three batches of adhesive used in the preparation of the panels specified in 4.4.1.1 and 4.4.1.2. control specimens nos. 1 and 7 shall be cut in accordance with the procedure specified in 4.4 from each panel and shall be identified as to panel number as well as specimen number. - these control specimens shall be tested at elevated tempera- ture 180 220f. (83. 3 31c. ) after 30 minutes of temperature conditions (no. 4 of table i) as specified in 4.5.5.2. failure of any one control specimen to meet the specified elevated temperature shear strength requirement of test no. 4 shai1 void the panel from which the specimen was cut for use in these exposure tests and a replacement panel shall be prepared. the resultant 24 panels (part paneb ) shall then be exposed at the conditions specified in 4.3.5 through 4.3.7; three panels (one panel representative of each batch of adhesive) shall be ex- posed at each of the conditions. after exposure, the panels shall be cut into individual specimens and tested in accordance with 4.5.5.9. 4.4.1.4 cleavage strength. cleavage panels shall be bonded metal in accordance with astm d1062-51. for acceptance tests two panels as shown in figure 2 shali be bonded and prepared. 4.5 qualification tests. 15 free datasheet http:///
MMM-A-134 4.5.1 qualification retest. unless otherwise specified by the pro- curing activity, adhesives which have previously passed the qualification tests but have subsequently been modified in any manner, shall satisfactorily pass re- testing of the material in order to retain qualification approval. qualification tests may be repeated on material previously found satisfactory at any time at the option of the activity responsible for qualification approval. 4.5.2 sampling instructions. the manufacturer shall submit a dupli- cate set of bonded panels and specimens which shall be prepared as specified in 4.4 and subparagraphs thereto. these panels shaii be prepared with adhesive samples from the same three batches of adhesive and shall be code marked the same as the panels upon which the data given in the test report (4.5.3) were obtained. the manufacturer shall also submit four l-pint samples of liquid adhe- sive together with necessary curing agents, or an equivalent amount of material in weight or measure if of another form, from each of three different numbered batches of the adhesive being presented for qualification. these adhesive sam- ples shall each be from batches of most recent production-scale manufacture, and may be from different batches than those used in preparing the above specified set of duplicate panels. part of the adhesive samples from each batch will be used in preparing test panels for qualification tests and the balance will be used for storage life tests (4.5. 5.11). ah samples shali be identified as to name of manufacturer, manufacturer?s designation, date of manufacture, base polymer and curing agents (as applicable ), the date of submittai, and identification of the ac- tivity submitting the samples, and forwarded to the naval air development cen- ter (see 6.4). in addition, a statement indicating that the products have not been rebranded shall accompany the samples. if rebranded, the names of the original manufacturers and original designations of the products shall be indi- cated. all information submitted will be treated as confidential. 4.5.3 test report. prior to conducting the qualification tests (4. 5.5 ), a dated and numbered report, certified by notarized affida~t, shall be furnished, giving the results of ali applicable tests listed in table 1. the indi- vidual specimen and average values for each test shail be reported (see 6.4.2). each value reported shall be shown as being for a definitely numbered specimen, the numbering of which shall be coded in the report in such a manner as to def- initely establish the particular panel from which the specimen was cut and the particular batch of adhesive with which said panel was bonded and the date of bonding. coded identification of the adhesive batches shall include the respec- tive dates of manufacture and sizes of batch. dates on which the different tests were performed shall be shown in the test report. the test report shall also cover all the requirements of paragraphs in section 3 (except 3.5). the actual pressure, temperature, and time of curing used in the preparation of the test panels shall con form to the description given in the instruction sheet and the report shall so state. 16 free datasheet http:///
,. -.. ? . . i ,, ,? ,. ,. ,. . ,? ,.. . ,, ml *1 ?sp 8t t1 ?% ,d ta %4 fc n . 8 i i 1 c a t f c ., t 1 1 1 i i i mmm-a?134 4.8.4 ~~ sbo@, the manufacturer shall submit attached to the te8t report (4.5.3) ea bhatdoo dwet in l coordarme wtth 3.5. 4.s.6 teti. 17be qualfflcatioa tests shall consist of all the tests of this specfflcatioa, l nd all inolude l pproval of the manufacturer?. inetructtons. theee tests will be condmted by the naval air development center (see 6.4. 1). any chaagw shall be .mtbject to the l pproval of that activity. 4. s.s. 1 normal tartpenture tensile abear test (tests nos. 1 and 2 of table i). the test s~ilnelt 8bsu be gripped tightly and uniformly 3cross the ends in tb. jaws of the testittg machine with the jsws tuxi specimen so aligned that the jaws are directly opposite each other, and in such a position that an imaginarj sttmi@t be will psas through the center of the bonded area and through the points of auspeasion. the epeoim- shall be gripped 2 inches :1/4 inch from each edge of the lap joint. the load shall then be applied at a rate of 1200to 1400 pounds pe: square hid per m- or * l e quivsle~t bead speed per minute until failure. tba load at failure shall be reoorded. the temhg machine l ccuracy shall be wkk in 1 percenl umgth l nd width of eimr l rea shall be measured to the nearest o. ~ inch ad shell be reoortbd. all fkfhg kade *11 be expreeeed in pounds per ~ ~ of a~~ ~ =-, =~~~a~ * * -em 0.01 square hch. i?be nsttm and peroem of fsktre, such l s oohesive faihtre (failure within the l dhesive adhioo hibe {dbdve pedttg &om the metal), or oontaot failure (lack of com plate adheaive-wmetal contaot thtring bonding), ad the adhesive thickness shall also be reoorded for each opecimen. adhesive thickness shal! be the micrometer thiolmecs, measured to the -est o. 00x inoh, of the overall thickness of lap joimt lees the ooxnbfned micrometer thicknees of the idtvidual pieces of surface- &eati metal, or the sdkesive tbio&tess can be measured with 3 traveling com- parator microscope or an equivalent measuring apparatus. a total of 6 specimen~ 2 specirnene representative of each of the three batches of adhesive horn the lots ( spedmene prepmi as 8pecified ie4. 4.1.1, shall be tested. the average sod minimum s=engths of these 6 specimens shail equal or exceed that specified for tests nom. 1 and 2 in tible i. e the strengths, either average or minimum, are less than that specified in tab& l wo more specimens born each of the three batches of adhesive shall be tested as a retest. xf both specimens from the same hatch of the adhesive fail to meet the minimum requirements in this retest and those from the other two batches of a~esive are satisfactory, a retest using 3 specimens &kom that same batch of adhesive shall h run. like failure in the retest shall cause rejection of the adhesive. the normal temperature shear strengths of all 1/2-inch lap joint specimens testi in accordance with the quali- fication tests of this specification, except values voided and replaced by retest values, shall be averaged for use in determining the acceptance-test-required normal temperature shear strength (4. 6.3. 3). 4.s.5.2 elevated tempenture teasiie shear test (test so. 4 of table 1). the 180? ~2? f. (83.3- ~l l?c. ) shear stremhtest shall be in accordance with4. 5.5. with the added requirement that a suitable oven or furnace shall be provided to maintain 17 free datasheet http:///
,? \ , 3fmkf-a-134 the 8pecimeas at the specffkxl test temperamre (see 4.9.3 and table i). six specimens selected as pre~crhed in 4. s. 5.1 shall be tested for tensile shear strength at 180? f (82? c) for the elevated shear test hated in table i (test no. 4). the l verage and minimum shear strength of each set of specimens tested shall equal or exc~ that specified in the applicable test of table i. retest provisions shall be as specified in 4.5.5.1. 4.5,5.3 low temperature tensile shear teat (teds nos. 3 and 5 of table ~. the low tmp=:~e *mile s~e- *~t *u ~ in -orda- wi* 4.5. s. 1 with the added requkement that a suitable chamber shall be provided for malntaitaing the specimen at -67 055? f. (-55 22.8? c.) (see 4.3.4). six s$)eci- meas selected as specified in 4. 5.5.1 shall be tested tir ~lle shear strength at -67?t 5*f. (-55?~2. 8?c. ). the average and minimum dear struogth of these specimens *all equal or exceed that specified for teats nos. 3 and 5 in table l like failure in the retest shall cause rejection of the achesh?e. 4.5.5.4 normal temperature fatigue atrertgth test (test no. 8 of table x). this teat shall be performed in accordance with the geoeral provisions of method 1061 of federal test method std. no. 175. specimens having 3/6-lneh overlap (see 4.4.1. 2) shall have cyclic l xial lueda applied by a testing machine at a rate not to exceed 3, 600 cycles per minute. the opedrneao shall be held ti@tly and in ali~ment as the ioed is applied by suitable ~ipe, and these wipe shall extend to with 1 :1/8 inch from the edge of the lap joint. the applied cyclic load shall always be in wneion aod shall range from the maximum sebctd to 10 percent of the maximum. the loads shall be accurate to $1 percent. length and width of the shear area shall tm measured to the nearest 0.01 inch and ehall be recor&d. z?te test shall be run until the spectmen fails or until the maximum required number of repeated stresaea have been applied (see 4.5.5.4. 1). rbe number of cycles to failure shall be recorded. 17te natxxe and percent of failure, such as cohesive failure (failure within the adhesive), adhesion fitilure (adhesive pulltng from metal), contact failure (lack of complete adhesive-to-metal contact), or tensile metal fo i lure, and the adhesive thiclmeas shall be recorded fur each specimen. adhesive thickness shall be micrometer thickness, measured to the nearest o, 001 inch, of the overall thickness of the lap joint less the combined micrometer thickness of the individual pieces of surface-treated metal, or the adhestve thickness can be measured with a traveling comparator m icroecope. 4.5.5.4.1 from each panel prepared as specified in 4.4.1.2, two pro- perly identified control specimens shall be taken, one horn the center and one ~ from the end, and these specimens shall be subjected to the normal temperature shear test specified in 4,5 5.1. rhe normal temperature shear strength results obtained on these fatigue control specimens with 3/ 8- in~! overlap shall be re- ported with the fat~gue data. a total of 15 specimens, 5 from each panel, shai] be tested in fatigue using maximum selected loads such that failures cccur, with approximately regular spacing gver a range frcm 10, 000 to 10, 000,000 cycles. - - free datasheet http:///
i ,. . . , . . ?, MMM-A-134 . . .? ,, . . ?. ,., ,1 ,. nom i?he lntmber of cydea df *8ting to fakre st ?k upper end of the ~ (10 mfiiiott\ maybe h&?ed, m order to l impit& the testtlq procedure, * 1 mlllkm cycles provtitag the ?~lkable fhtlgue stramgth, l s determim@ oonforms toteetno* 8 of table l the mxnber of cyclee to failures l d correitponding loads cdcuhed in pomde w equare (tao ahdl he reooded on strece-log cycle coordinates l nd s amcuith curve drawn. the potnt st *1* tie rn- mwve interoepte the 1o-m1mb oyole twdtnate or t-ntllltom oyole ordtnata (eee not# above), w the !ktgue strength. ihta fktigw =engt$ ehall mud or exoeed that apecif?ki for test no. 8 tn table l xf the tktlgue strength tit= bfla k!- that apedkd, anodier aet of 6 specirneds ehatl b pr~ed amf teeted, *ch wtth a 600-poit?~per-squere- ioch xnaxtmum l hernetimg stre88. if my osm or the8e ~imem *lls to conform to the i&miilion cyeie reqaimhnemt, uk l ihb8ive shall be rejected. 4.5.5.5 ?u&maltempe*hmer ei)p-rqtumtea4 (tea no. 6 of table f). ?1?hs lap joint speoimcos(~ 4. 4) ehc!lbetesked in a deadwe~ loading test appan~uh capable d applying loads aecurate withtn lpercw% the qmoimewa shall be gripped or mqwaded by meane of 6. 250-idaimmtet @qb placed thro~ drilkdhotes in theebdbd ~lrneas as ehown in figure 3. the dribd kle ehall be oeatemd (*o. 02 10a) 10 the w+dth of tbe ~smen and placed with k6 ce~er 1 inch irom the end of the specimem care muet be exercked to avoid eccentricity tntk ioedtq of the dmsive jol~. tk entltm assembly of specimen and loadi~ meehatttmh must be checlmd for niigntnuut prior to teat. long pull rods wtil faciliute obtaining proper l ligament. specimens shall remain loaded wtth a ? 1, 60(kpound-per-square- inch skreas until npture oamra or until the stress has been applied for 2c0 imuks. the kmgth and whith of the shear area shah be meaeured to the nearest 0.01 inch and *)1 be recorded. the spedmeti bohd areas shall be calculated h the nearest q. 01 sqiiare inch. creep shall be measured &ring ttet in accordance with 4.5.5.7. the tltne to failure and the amount of creep of each specimen shall be recorded, as weu as the nature and percent of joint faihire, if l ny, and the adtesive film thickoess. the tj@ of failure shall be determined and the adhesive film thickness measured as speci- fied in 4.5.5.1 nnd 4.5.5.4. six specimens. selected as specified in 4.5.5.1, ahau be tested at the 1, 600-pound-per-square- inch stress. if one or more of these epecimens falls the 200-hour test no. 6 of @ble i. another set of specimens shall be selected and testud. if any one of these retest specimens fails the test, the adhesive ahali be rejected. 4.5.5.6 elevated temperature creep-rupture test (test no. 7 of table i). the 180? i2? f. (83? $1. 1 l c.)creep-rupture test shall be in accordance with4. s. 5.5, with the added requirement that a sui=ble furnace or oven, which does not inflwnee the application creep shall be of load, shall be provided to mainwin the temperature measured on the specimen under stress in accordance aa required. with d. 5. 5.8 19 free datasheet http:///
,, ,, ,. MMM-A-134 . six specimens, selected as specified in 4.5.5.1, shall be tested with a 300- pound-per- quare- htch stress. u one or more of these specimens fails the 200 hour teat no. 7 of table 1, 6 more specimens (2 specimenc from each of the 3 adhesive batches) a ha 11 be tested as a retek like failure in the reteet shall cauae rejection of the adhesive. 4.5.5.7 normal temperature total creep deformation. as a part of the creef,+rupture tests 8peci.wi in 4.5.5.5, measurements of total &formation (ln- cludhg that che to initial ioadtng) shall be made while the specimen is under stress. the deformation shall be measured to l n accuracy of 0.0001 inch at euch intervak of time that a smooth time deformation curve may be pkkted. the exact time in- tervals will depend upon the adhesive being tested and the creep rate of the joint. the deformation may be meaeured dtrectly by obeerving the dicplacexnent of the scribe lines across both edges of the specimen near each eod and st the center of the lap joint (figure 3), uamg a traveling comparator microscope capable of mea- suring displacement, aa required, to the neareat o. 0001 inch or l n equivalent measuring apparatus. the deformation of each specimen ehd he determined by averaging the deformation meaeurementa at the six prescribed points on the joint. xf an exteneometer h used, the pge iengrh multiplied by l value equal to the stress in the metal, divided by modulus 4 the metai uses (10. s times 106 pounds per quare inch for l ium hmm l lloy) eha 11 be subtracted horn all extensometer readinga. rhe average total deformation of the 6 specimens at 200 houm aimll be no greater thim th mtxinam detonations specified in table x. a21 measurenutts sluill be repro tai. rej action ad retest provisions shall be as spa if ied in 4. s.l6. 4.5.5.8 elevated temperature total creep deformation. i%e eievated temperature total deformstton teats shall be made during the elevated temperature creep-rupture tests, 4.5.5.6. the procedure for deformation meaauremente till & as specified in 4.5. s. 7, except that the teettng temperature shall be ?189 *5- f. (szo *2. s? c,) (see 4.5.5. 2), as required lntable i. care shall be taken to insure that these tercperaturea have no effects on the accuracy of the method of measuring the &formation. rejectfon and retest provlaione shall be as apecb rid tn 4.5. s.6. 4.5.5.9 tensile shear after salt spray, accelerated vwthering and fluid ex- posure (tests no.. 9 through 11 of tible i). the partial paneia (figure 1) which have been expoeed to salt spray conditions, accelented weathering or immersed in fluids as specified in4. 3.?, 4.3.6 and 4.3.7 skill each be cut inta four individual specimens as shown in figure 1. the cutting and marking of these apecimena shall be done as specifiec in 4.4. two spec]mens randomly selected horn each panel (3 panels per exposure condition), 1 panel being prepared with each of the three batches of adheoive (4. 4.1. 3), shall be tested for shear strength at normal temperatures (teats nos. 9, 10, ad 11 of table f) following the proc-res specified in 4.5.5.1. iesta shall be ma* im- mediately after removal from the exposure condition. rhe stren@hs of the apeci- mena tested at each condition shall equal or exceed that epeclfied ir tests .nos. 9 through 1 i uf table l as applicable. if original test set fails in this regard, another 20 free datasheet http:///
. . ,,, .! ,, 1? . .? .? ,. ,. ,. mmm-a-m4 , 4, s*s. 10 clemeg. 8tmn@l cleavage etreqtb of tbe dtestve ehdl be dotormhed by tedng u lea- three specimens h l ooordaoc@ with astm method d1062-s1. tba reeulte ebali be recorded in pouoda. 4. sos, 11 fmmge iife turn. om pint peokago of 14?m adheawee, or equivalent klmunt pmpdy pack8ged (ate 5.1), if of another form, d emb of b 3 lmtcbee of mbmive being eubmitted for qualification uxter ~ sp~=~_ dd be -d *r ~~~~ d &e coodf~om 6~1fk im 3. s. 3. at tbe ends of tbe reepectlve etorage periods, theee s8xnple8 shall be ueed h tbe preparation of hooded lap joint panels as required by teets noe. 1, 2, 4, and 9 of table 1, which are l ppl~cable to the partkular w of adbeeive be{ng submuted. i%eee samples ebell sk b ueed in the teete fir l pplication life. six spectmeoe, 2 specimens fkom eaeb of the 3 ?~si~e batchea, eltaii be te6t8d st l ach of the l pplicable test conditions, except for teat no. 9 fdr whioh 1 putial 1 penal (figure 1) from each of the 3 l dje9tve batches -bail be expoeed and teeted. tbe *e+ of the8e epeclrn8ns shell equal* exoeed tit qwcifled for tbe applkable tam in table l if the ortginal test aet hih h thh regard, l other eat or epecimene mey be prepared with the remainder of the imnple and teeted. i like tiihwe in he retest ebdl came rejecthm of the a~eefve or a modifketiai of mulrwm etoregw life #t8@n-t 80 fimtidmd hy the l dteeive manufeotame?. i @ee30a,389cl c.4.4. ) i. 6 cw)lty *merbce te6ta. 4.6.1 samplihg. . . 4.6. 1.1 adheaiw, a single sample of not less than 2 qusrta of ltquid dtesive or l equiv81ent l mount in weight or meaalre, if of another form, hall be takmt l t ran~m from each lot and teeted. each sample shall be divided into two equal parts; one p-rt ebdl tm avoilabie for required acceptance teets aod the other part eball be reta~nd for retests, if rweeseary. the etorage condition for tbe retained sample sbsll be that recommended by the a~ea.ive madxturer (ace 3.3. 3), and samples shall not & retainai beyond tbc storage life, as recom- mended by tbe adiesive manufacturer additional aaznplea may be taken if con- m&red oeceseary to determine conformance of tbe product to this specification. 4.6.1.2? filled containers. a random sample of filled coma iners shall be selected from each lot in accor&nce with mil-st~ ~05 l t inspmtirm level i, and l t l cceptable quality level (aql) of 2.5 percent defective, to verify conftmnanm to ill requirements of this apeciflcation regarding fill, cloture, tmd marking. 21 free datasheet http:///
. ,, .? ,. . MMM-A-134 4.6.2 l& a lot shall conatst of 500 pounds or fraction thereof of adhesive of one type (and form, if applicable), mwmfa@md l t one time in one batch, forming part of one contract or order, and mbmttted for tnspeotton l t the same time l nd phce. a batch shall be defined at that quantity of nmterial which has been mamtfactured at one time or subjected to eorne unit chemical or physical mtxing process tntded to make the fins 1 product horoo~neouo. 4.6.3 tests. samples of each submitted l= of dteoive delivered on coatr act or order shall % subjected to the following quality conformance tests. yest reports, in duplicate, ahaxl be fbrnisbed for all qudky confortnmwe teats spectfled in this specification, and shall be aigrted by an authorized representative of the laboratory making the te-. acceptance or approval of material &ring course of manufacture slmll h no case be construed l s a guaranty of the acceptance of the finished prmhts. 4.6.3.1 examination of product. the a~esive shall be examtned to determine conformance with the requirements of this apeclflcation tir which no test is listed herein. 4. 6.2.2 application xtie :tyjx%a : and d). 4.6.3.2.1 ap~~tua. i?he a~ratua shall consist of a brookfleld synchroletiic viacometer, (model hbf, volts 110, req. --60~, or m~roved equivalent. it ahau be mounted on a platform which is attached to utand in such a manner that the viscometer ia lowered at the rate of i inch per minute by means of a motor-driven buttress-type screw. .4 spindle, attached to the viacometer, beara a notch and disc on its shaft. the notch indicates the &pth of penetration. a beaker, (200 m!, 5 inches tall, 2- 1/4 inches diameter), shall serve to weigh and mix the base adhesive with the accelerator and uuspend r in a cold bath. the cold bath shall serve as t~e source of refrigeration. rhe tempera~re of the bath 50 *2* f. (10? *1. 1? c. j shall be used to maintain the thermal equilibrium 66? :2 f. (19? *1. 1? c.) of the adhesive during the test period. 4. 6.3.2.2 proce~re. one hundred seventy ffve grams of the epoxy resin shall be wei@ed in the beaker, and suspended in a cold bath to bring the baae ad- hesive temperature to 55 0 ~29 f.(13c ~ 1. 1? c. ). an accumtely weighed portion of accelerator, as specified by the adhesive manufacturer, shall be thoroughly mixed. in small potions, with the refrigerated el)oxj resin [ov 15 minutes. readings shsll be taken every 30 minutes until a viscosity? of 160,000 centipoises is reached to detetmine compliance with paragraph 3.3.1. 4.6.3.3 normal temperature tensile shear tmt (acceptance). i%e normal @mperature tensile shear test shall be in accordance with 4.5.5.1. fwo panels as shown in figure 2 (except the panel width shall be 6 inches instead of 9 inches) or two panels as shown in figure f shall be prepared the cleaning and bonding of these panels shall be done in accordance with the approved manu~~ cturer?s 22 free datasheet http:///
MMM-A-134 [ instructions. all available specimens therefrom shall be tested. the average ( normal temperature shear strength value shall equal or exceed the applicable ac- ceptance requirements of this specification or the process specification prepared by the processing activity in accordance with mil-a-9067, whichever is higher. i i 4.6.3.4 elevated temperature tensile shear test (acceptance, type iii ). the elevated temperature tensile shear tests shall be in accordance with 4.5.5.2. 1 two panels as specified in 4.6.3.3 shall be prepared for test no. 4 of table i applicable to the type 111 adhesive. aii available specimens therefrom shall be i tested. the respective average test values shall be equal to or exceed the ap- plicable acceptance requirements of this specification or the process specification 1 prepared by the processing activity in accordance with mil-a-9067, whichever is higher. i i 4.6.3.5 examination of filled containers. each sample-filled container, selected in accordance with 4.6.1.2, shall be examined for defects of the con- tainer and closure for evidence of leakage, and for unsatisfactory markings. each sample-filled container shall also be weighed to determine the amount of the contents. any container in the sample having one or more defects or under re- quired fill, shall be rejected, and if the number of defective containers in any sample exceeds the acceptance number for the specified sampling plan of mil- std-105, the lot represented by the sample shall be rejected. 4.6.4 rejection criteria. if the results of the quality conformance tests show failure to conform to 4.6.3 the lot shall be rejected. i 4.7 inspection of preparation for delivery. 4.7.1 quality conformance inspection of pack. 4.7.1.1 unit of product. for the purpose of inspection, a completed pack prepared for shipment shall be considered a unit of product. 4.7.1.2 sampling. sampling for examination shall be in accordance with m1l-std-105. 4.7.1.3 examination. samples selected in accordance with 4.7.1.2 shall be examined for the following defects. aql shall be 2.5 percent defective. 101. materials, methods and containers not as specified for level a or b. each incorrect material, method or con- tainer shall constitute one defect. 23 free datasheet http:///
j ?, , ,. ,. ,, ., . . .,. . . . . ,_ MMM-A-134 102. 103. iwo 105. - boxes not waterproofed u qmc~ed for level a. two component systems not contalnertzed aa a kit. strapping not zinc rmated for level a. marking missing, illegible, incomplete or incorrect f~r level a, b, or c. 5. prepafmtion for delxvery 5.1 =ckaging. l%cimging shall be level a, b, or c, as mpclfied (see 6. 3). 5.1.1 level a. 5.1,1.1 liquid l dheaivea. 5.1.1.1.1 unit packaging. liquid adhesives shall be pachged in cane conforming to ra@wnenta of ppp-c-96, type v, class 20 cans sha!l be the u.s. tinckrd pint, quati, or gallon size, as specified (see 6.3). s. 1.1.1.2 intermediate packagtng. liquid adhesives ~ckaged as smcified in 501.1.1.1 shall be in~nzmdi8te packaged in accordance wtth requirements in the appendix of ppp-c-96, wltb coohainers confomning to the requiremeuta of ppp-b-63~ v3c and shall be within the weight limitations specified for the container. 5.1.1.2 film adhesivea. 5.1.1.2.1 unit packaging. film adhes ivea, in roll form of size as specified (see 6.3) shall be wmppe$ in a suitabie release paper and individually packaged ifl a box conforming to requirements of ppp-b-636, w6c or w6~ or ppp-b-566, variety 4, style, type and class optional. each box shall be waterproofed as l pecifi- for the weatherproofing of dotted boxes in accordance wtth the appeodix of ?~ p-b-636. the film adhesive is to be supplied in rolls of specified width (inches), length (feet), sod thickness (rnils). 5. 1.1.2.2 intermediate packaging. rolls of film adhesive, pckaged as specified in s. 1. 1.2.1 shall be intermediate packaged in quantltiea of 12 rolls (see 6. in boxes conforming tc r~uirementa of ppp-b-636, v3c. 5.1.1.3 adhesives with curing agents or solvents. 24 free datasheet http:///
., ,?. :,. ,, # i . . MMM-A-134 s.10x.3.1 u8ft paokagtrq. wkn two adhesive components are necessary m 8 mitt, tk oomponeota shall be packaged p!wded as qecifled frl 5.1.1.201. 5.1.1,3.2 intemodiate pacimghlg. spsclfled in 5. 1.1.3.1 shall be intermediate 12 kits, 8s specffhd in s. 1.1.2.2. 8s a kit, in bqxtm sealed md watir- - componutta of ma, packaged 8s psckagd in quantitioa of 4,6, or 5.1.2 level b. (civil agencies). packaging for level b shall be as in 5.1.1 exce~ that boxes conforming to ppp-b-665 or ppp-b-676 may also b m and the boxes conforming to ppp-b-636 simu be class domestic (see 6,3). 4 5.1.3 iavol c. the a~esive, liquid or film. shall be packaged to , afford protection against &trsoration l nd damage from tk supplier to tk initial i i &atirmtion for immediate use. when no adks!ve ocwqmaents arw necessary as a unit, tk components shall be packaged as a kit. ~ supplier shall use his 1 commercial practice provkii~ s. 2 pac~. ~?. . 5.2.1 level a. ;? s.2.1.1 adhesives. it futfflla the requhmeats for this level. adhesives, intmaediate packagai as sp=ifid in s.1.1.1.2 or s.1.1.2.2 shall be pscked in wod clrntaj plywood boxes con- confonning to requiranents of ppp-b~ 601, overseas type, style optional in qmtities mt to exceal the weight 1 imitation of the container. ibx c1osuy d strapping shall be tion. strapphg shall 5.2.2 level s.1.l.l.2or s.l.l .2.2 m additional ovemack in acmrcke with the ajpcmiix to the box spmifica - be zinc coated. il. adhesive, mtemediate pckaged as specified in shall be shipped dlratly m the mtermed~ate contain is necessary. 6oxes sm1 be strap* m duoruam e . with requirements m the appemiix to l?1?p-b-63tj. . . 5. 2.3 level c. adheuive, ~c?kaged as specified in 5.1 shll be packed to assure carrier acceptance and safe delivery to destination at lowest rating in conformame b requirements of ljniform freight classification or lnat 10m1 ~tor freight classification. 5.3 marking. 5.3.1 civil agencies. interior and exterior containers shail be marked in accordance *ilh federal !jtanciard na. 123. fxterior containers shall be marked 2s free datasheet http:///
,, i . . ,- mmwa-184 - with @e of manufacture of conteti, by month l nd year, ebaiihmarked dtha**tiva ujatoqe, suob as: ?a~sivea codo~@ to thie 0p8cffi0atiai ?~ be stored l t 8 temperature d leee tha lmo f. (30? c.) in the l heence of direet l nl@. if transit or normal l tomge oondttioas, or m& n0c8?88it8t4 expeure of the a~lve to temfmrs. tame tn excess of 86? f. (30 ?c. ) the life cd tbe adheaive will be propoflionally rechwed, ? s.3.2 military agencies. interior and extwfor comtdners shall b marked in accomfamce with mil-std-i 29. exterior containers shall he marked with ~ti of contents, by month and year, not by code, l nd shall also be marked with a tie relative to storage, such as: ?adhesives conforming to this l pectfloathn ehallbe etmdat a temperature of less than 86? f. (30? c.) in the absence of direct sua- light. if tmnsit or normal storage umditions, sr both, necessitate eqm-ure of the adhesive to temperatures in excess of 86? f. (30 c.) the life of the adhesive will be proportimdy reduced. ? s.3. s special markings. in addition to marking specified in 5.3.1 - s. 3.2 and the contract or purchase order, each multi-compcment kit (see 5.1.1 shall be marked wtth the net volume or oet weight of the total adhesive contents, an each component of the w shall be marked to identify the component and show ita net volume or weight as applicable (see 5.1. 1). 6. uotes 6.1 intended use. adhesives conforming to tnu specification are inti for uee in the stmctural bonding of metil to metsl parts of aircraft to produce high strength joints when cured under specified conditiooe. the adheaives l re lnteaded principally for use on clad alum inure ji1oyo. parta or assemblies requirtng the use of l dhesives covered by this specification should be &slgned wdth coneide~tion for the heat and pressure required *ring the bonding o~ntiona the mtimum curing pressure specified in 3.3.2.2 is a oecessary requirement for determining the suitability of an adhesive for geneml production use; however, shop facilities permitting higher pressures in accorckmce with the manufacturer?s instructiooa may be umd wherever practicable. 26 free datasheet http:///
. . i ,, ,, . . . 1 ., . . .? , ,. nmm-a-m4 6.1.1 ? ?im ub-wu oovmd by this spdfldtom are ak dufabla for ~ ether eondruotlau lnoludtag wood, glau, @enotlo, polyester arid l - rnfn lamttmtu to each x = in oombmtt- 6.1.s dee*re - -d tit heu 8hw@b vdu- speoified bexdd are hod oa teds wrf-d witla c1ad dumhum alloy. for uee * other t@8?i810, ~ vduu of the l -swe shall be furtbr iovestifptd 6.1.3 adjuwea awe-d by thh specifhetion are xmt intended for uee b bold= 8adwtoh ~ttona unlama they coeform to mil-a-2546& 6. z suitability for use with expioeivea. w&8 suitability for uee wttb 8 partieuhr explosive is required, 8 special teet @all be cooducted l t a deeigmted govermnent hlxwq*ry to de*rxnlne compliance of tlm adumive in w respect, tbe proourbg ?ctivl~ l ball reque9t this ket to be oon&oted, shall s* the ~cular explosive to be treed and desigxmte the qualifying laboratory. 6.3 wkll?fng -. rwch8ders should e%eroise any dedmd options offered heroin d proourozn= docmsn=ti shmdd l pu@ t& fdlo~. - (a) (w (c) (d) (e) m (8) (m (i) me, number, ad ate of ma speolfiutlon ~ of l btive [mm 1.2), adbuivo ooda number (88. 3.20 $.1) form of adhe8jve required (se. s. 2) amowste d unit quantities of dhesivu required (see &1. 1) ~m of liquid dwsivea inane l8ngths uddt& and thickness of film adhealve when oanpmeda dial] be pnokaged m l kit nwn&r of mm to be pmcked in intermediate pack (see 5.1.1.3.2) level of packagiag sai ~cking required (see 5.1 and 5. 2) 6.4 qualification tnsting. 27 free datasheet http:///
,, . . . . . . . )chtm-a-m4 6,4.1 qualification. with respeot ti p~ requiring qualification, warde wfll be made only for pro&cte which are at tie time set for opening of bide, qidifhd for inclueion in the l p@ioable qualified productt ltet whether or not such pmxhwte have l ctually been so msted by that date. the l ttention of the euppliera h called to this requirement, l d manufacture- are urged to srrange to have the prrxkmts that they pmpse to offer to the federal govermnont, tested for qualifi- cation in order tbt they may be eligiblo to be swarded wntrae~ or omlers for the prwkwte covered by this .?pecifloation. the activity reepondble for the qualified produote liet is tho naval air syetem command, washington, d. c. 20360: how- ever, infomnstion pexwntng to q~~=tion of prodt=ta may be obtained from the dtr~r, aero materials department, naval air imrelopnent center, johneville, wamin8m, pam8yivanta 18974. 6.4.2 ia wthorlaing qudffiatton te8td, it ehould be stated in the btter of authorizatloo t!mt the follcmdng information l nd earnplea should be fumdsht at ~ mt b the guvernmenl (a) ., (m (c) (d) notarized tat report {4. s. 3) liatlng all &ta ommnd with three mpe-te batches of the l dhedve in evaluation teeta performed h mos*nee w3 m meciflc=tim a duplicate set of bonded bst pnels prepared with the urns three btchee of l dhesive and under the 8ame bxbg ootiuona as ueed to obtain the am given in the teat report. twelve lap-joid wkwls (11 with l l/2-inch overlap and one with a 3/8-inch ovorlap), wtth eaoh of the thrw batches of adbeoive *1 h requiti (see 4.4, 4.4.1, and 4. s. 2 for ~el prewmtion and identifiatlon of paels wftb ad- heaive batoh. ) in8tmction sheet (4. s. 4) iipttng all of the information aa ra@red in 3.5 and including sto-ge ufe recomrntitiona (3.3. s). four l-pint eamples of uq@d dbeeive together with mcueary curing agents, or an equivalent amount of matertal in weight and meaeum if of another form, from each of three diflerent batcheo of adhesivee. the adhesive earnplea shall & from batches of recent production scalo manufacture and may be from different btehes from thee uwd in -* the above teat psneta. ?fheee aampies should each be proper!y pckaged for storag (see section 5) and sbll b vwrb iden~ifi~ (sih ~as. % 22 free datasheet http:///
( ., ?! ,?. . . ,, . . . . . . . . . . (0) {f) .- MMM-A-134 if the remanmendad mebd of preprfng the metal 8ud5ce for kmdlng rquired the uae of chemicals other than s-rd oommerolal ackh, edventa, or adium chromate, the rnambctwer shall fnolu~ amgh of such chemicale to make z @ona of solution. z%a ~cturer shall pay the tmnspo-tion charges to and from the ckdgnated pofnt -m teata are to be made. h the c8se of hllura of the eampxe or aample8 auixnl~ oonsidention will he given to tlw requeti of the mmmbtumr for addtiotml test only after it ha been clqrly l lmwn that cimngec have been rna& in the product which the govern- ment conddere sufficient to wamnt additional teeta. 6.4.3 applkatba for kmta of sul*bili& for uae with expheivea, may be made to the commanding officer, ploatiaoy arsenal, dover, new jersey, attamon: samuel fehxmn ammuaiticm mmmtoriu, ombance corps, fkatic mhoratory. 6.4.4 admaivea conforming ti the tier rquiremenu of ma spaci- fkmttcm nmy, at the option of the qualifying l owi&, he *d 00 the quamiad pm&da hat of produeta quaufled umier MMM-A-134 (see 6.4.1) prior to the completion of the storage life tests. modlficationa d the manufacturer?a storage mfe reoommemhtbna or removal of the l dkdve fmm the qualifiul pro&ota i-w will be neoeaeary, if aubaqumtly the l dhesive &ua i@ w the stonge life teet. military interest: custodku: arsny ? mr navy - as atr foroe -11 review actlvltles: army - mi, mr, av, el, cl, me, mu, wc c mlamcm311mu!qt : gsa - f= jus hew com-nb agr va-dms . navy - as air force -84, user activities: navy - yd, cc, 85 sh, os navy - as ordere for this publication l re to be placed tith general smacea ~n= i-t z atlon, acting aa an agent for the superintendent of ibcumento. see section 2 of this epeclficstlon to titaln extra copies and other dom.ments referenced herein. price ~ cents each. 29 free datasheet http:///
.- free datasheet http:///
i l iiu37rl .,t\ gns: in ~ continuing effofi to msk~ m:r staadardiition documente better, the dod protidas ti form for use u .~nuttms commen~ end suggestions for itaprrtvemenk. all uocrs of military stmxkdhtion docuroents are iantec to p:owd ?--sdgqeslionh. thu form mey be da=bed, folded slong tbe lima indicated, taped along the looao edge (do not staple), a..( l ailed. in bkxk 5, be es specific u possible 8bout iwticuhr problem - such es wording which required iawrprctatio~, wk loo rigid, rutrictiw. i=, abiguow or was incomwtibh ud @w ~~ wodiku -w *w wo~d ~1~** the probhu. enter in block ti any remarb not rtbted to * sp@dic pumk@i of tie d~ nt. if block 7 ie fried out, an acknowledgement till be mailed to you within 30 djiys to lot you know that your commm~ wore msehd -d m being cotidered . note: ?1?me form may nm, be treed w request copies of documeats, aor @ requat wuq dwiationq or clarificsticm of speci k8tion rquirernen @ on cumnt contracts. cornmottte &bmittad on this form do not constituw or imply authorization tn wsive any pomion of th referenced document(s) or to atnmd cob~ q*umi* 1 i i (fold don, thu i&u) i (fom -n thh 1-) )epartment of the navy 111111 of fic!al busines penalti :or l riv ate use $3d0 i business reply mail [ i first class l ermit no. 12503 washington d c i po= age will se paid by the department of the navy l- no postag necess4 r 16 ma il i-c in the united stat commander naval air system command enginixring division standardization section code : air 52021 department of the navy washington, dc 20361 e?! free datasheet http:///
* standardization document improvement proposal (see inmrwwm - rewse side) 20 cumsnt numoer 2 oocument title i -. name op sueml=tng oroani=tion 4. type of organization (m+ orc) q vcnoon , n u6en + 4doncs(amq cny, warn, zip c-) c1 man ufa~urer q othe r (shcvy) .? -?noa lem argas m ?uw~ ntjm ad wo*w. b. nuom~ wocdk$g; i i . b i : ?: name of susmitter fl.~1, fbst, n] - opl,cm- b. work telephone numee~ /jnek4 a?r- c04 - ootlotw ??? ?? .i , mailing aoof4ess (9twcf, cjty, st-m, .?:? :mb) -- 00tkwwi ! 8. datt of submission (y ymmddi ?? ! p~ev!ous edition is of ho lete. free datasheet http:///

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