1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 07 13 Activated D. Henrickson LAGWP 3948-a Page 1 of 9 DEADENER, ASPHALT/SBR MASTIC, LIGHT WEIGHT, WSS-M5G62-A1PSA/HEAT BONDABLEDEADENER, ASPHALT/SBR MASTIC, MEDIUM WEIGHT, WSS-M5G62-A2PSA/HEAT BONDABLE1. SC
2、OPEAll of the materials defined by this specification are acousticaldeaden ers. The various kinds of deadeners specified are described in themat erial matrix enclosed herein. Each unique material described in thematrix is assigned its own specification number.2. APPLICATIONThi s specification was re
3、leased originally for materials used to dampvib rating body panels. Unique material applications are defined by thematerial matrix incorporate in the specification.Prior to use, the material must be evaluated under the c omponent productionparameters. The choice of substrates, stamping lubricants, p
4、lantproces sing conditions and specific design application may affect materialperform ance. Compliance with this specification does not guarantee thematerial will function for all potential applications on a vehicle.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers
5、must conform to Quality SystemRequirements, QS-9000. Material specification r equirements are to beused fo r initial qualification of materials. A Control Plan forong oing production verification is required. This plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d
6、 Supplier Technical Assistance (STA) prior to production partssubmission. Appropriate statistical tools must be used to analyzepr ocess/product data and assure consistent processing of thematerials.Part producers using this material in their products, must use Fordapproved materials and must conform
7、 to a process control plan whichhas been approved by STA and/or the relevant Materials Activity.ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 2 of 9 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l
8、 analysis of material/parts supplied to this specification.The IR spectra and thermograms established for i nitial approval shallconst itute the reference standard and shall be kept on file at thedesignated material laboratory. All samples sha ll produce IR spectraand thermograms that correspond to
9、the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are based on ma terial conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested under thesam
10、e conditions unless otherwise specified.3.4 MATERIAL MATRIXThe matrix below provides information on basic material type,manufacturing process location, method of applic ation, and acceptablein-vehicle orientation for each material specification number.Material TypeA1 / A2. Asphaltic Based X. Polyvin
11、yl Chloride. Ethylene Vinyl Acetate. Polyvinyl Acetate. Urethane. Butyl. SBR based X. Saturated Felt. Aluminum Foil. Adhesive X. Magnetic. Special Requirement. Release Liner XAssembly Location (whereapplied in mfg. process). Stamping Plant or AssemblyPlant body-in-white. Paint Shop (assembly plant X
12、after E-coat bake). Trim Shop (assemblyplant after paint)ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 3 of 9 Method of Application A1 / A2. Spray. Lay by Hand X. Pressurize X. Extrude. Special RequirementIn-vehicle Orientation. Horizontal Only. Vertical or Horizontal X. I
13、nverted or Other. Special Requirement3.5 SAMPLE PREPARATION3.5.1 Applying Material to Substrate3.5.1.1 Materials Applied with PressureRoll once (in the forward direction only) with a2.2 kg roller having an 83 mm diameter.3.5.2 Sample OrientationAl l in-vehicle orientations used should be evaluated (
14、seematerial matrix (para 3.4) for in-vehicle orientations).3.5.3 Processing Temperature BakesTypical manufacturing-process minutes-at-metal-temperatures(MMT) minimums, nominals, and maximums are iden tified below.All processing sequences encountered with the ma terial shouldbe e valuated (see materi
15、al matrix, para 3.4, for processinformation) unless otherwise specified herein.Process Low Bake Nominal High BakeBake (MMT) (MMT) (MMT)E-coat 10 170 C 10 182 C 30 205 CPrimer 8 135 C 10 150 C 20 177 CTopcoat 10 125 C 10 130 C 20 165 CPredelivery 10 100 C3.5.4 Production Representative SubstratesAll
16、metals, oils/draw compounds, coatings, and o ther surfacesused with the material should be evaluated (for typicalsubstrates, oils and coatings see para 3.5.5).ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 4 of 9 3.5.4.1 Mater ials Applied at Metal Stamping or in theAssembl
17、y Plant Body Shop (body-in-white): allmetals, galvanize coatings, oils/draw compound s andothe r surfaces used with the material should beevaluated.3.5.4.2 Materials Applied in the Assembly Plant Paint Shop(aft er E-coat bake): all E-Coats, primers, andot her surfaces used with the material shouldev
18、aluated.3.5.4.3 Materials Applied in the Assembly Plant Trim Shop(aft er paint): all topcoats and other surfacesused with the material should be evaluated.3.5.5 System Process CompatibilityInitia l material approval was based on specific materialsystems which included the substrate, stamping l ubric
19、ants anddeadener system. The originally approved materi al system wasprocessed and cured using specific production processparam eters. Substrate choice, stamping lubricants, andasse mbly plant processing conditions may affect adhesiveperform ance. If any of these parameters are changed,material perf
20、ormance must be validated using the newparameters.3.6 TEST MATRIXThe test matrix below and more detailed requirements referenced inthis specification identify the testing requirements for eachmaterial specification.A1 A2Total Thickness, mm As Specified on Engineering Drawing(ASTM D 461)Total Mass, k
21、g/m2, max 3.25 4.10(ASTM D 461)Damping Loss Factor, min(ASTM E 756, 200 hz). At 0 C 0.08 0.13. At 15 C 0.08 0.18. At 30 C 0.06 0.16. At 45 C 0.03 0.10. At 60 C 0.015 0.04Peel Adhesion, N, min. No Bake, 1 h dwell 2.0 2.8. No Bake, 24 h dwell 4.0 5.0. No Bake, 250 h dwell 6.0 6.0. Bake & 250 h 88 C Co
22、hesive Failure Cohesive Failure. Bake & 250 h 38 C Cohesive Failure Cohesive Failure& 100 % RHENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 5 of 9 A1 A2Sustained Heat and Sag X XCold Adhesion X X(FLTM BV 101-02)E-Coat Compatibility(FLTM BV 119-01)Wash Resistance(FLTM BV 11
23、6-01)Severe Wash Resistance(FLTM BV 116-02)Foil Thickness, mm(ASTM D 461)Flammability X X(ISO 3795/SAE J369)Fogging, min 60 60(FLTM BO 116-03)Odor, max 2 2(or no worse than materialcurrently approved)(SAE J1351)Note: X = Requirement is specified in the appropriate paragraphs ofthis specification whi
24、ch follow.3.7 DAMPING LOSS FACTOR As specified in TEST MATRIX(ASTM E 756, average of 5 beams,at each temperature, 200 Hz,15 C increments from 0 - 60 C)Test Conditions (unless otherwise specified):. 320 x 20 x 0.8 mm clean cold rolled steel Oberst bar. Oberst bar damped one side only. 40 mm root leng
25、th undamped, 280 mm free length damped. Mass of damping material as specified in test matrix. Cure temperature and time as specified by the Materials EngineeringActivity. Report the composite bar loss factor only.Note : The calculated value at 200 Hz is obtained by linearinterpo lation between the l
26、oss factor values of the resonancesdirectly on either side of 200 Hz.ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 6 of 9 3.8 PEEL ADHESION As specified in TEST MATRIXTest Me thod (also see SAMPLE PREPARATION paragraph above for moredetailed information): Apply 25 x 125 mm
27、 length strips of materialto production representative substrate panels. The material may haveto be backed with mylar or duct tape for reinforcement during peel.Suspend panels as oriented in-vehicle during dwell periods and bakecycling. Use low bake and high bake schedules only for materialsthat ar
28、e processed through Body and Assembly paint process. Usepredelivery bake and no bake schedules (oriented as in-vehicle) only,for materials applied at Body and Assembly Division after paintprocessing. Pull ninety degrees to surface at a rate of 305mm/minut e. The peel value reported must be that obta
29、ined for theaverage load.3.9 SUSTAINED HEAT AND SAG No sagging or material degradationTest Me thod (also see SAMPLE PREPARATION paragraph above for moredetailed information): This requirement is for materials that arepro cessed through Body and Assembly paint process only. Apply,orient, and bake (hi
30、gh bake only) 150 x 150 mm test samples toproduction representative substrate panels. Suspend panels asorien ted in-vehicle during the bake cycle. No smoking, materialdegradation, or sag of the material is allowed.3.10 COLD ADHESION No loss of adhesion(FLTM BV 101-02)Test Me thod (also see SAMPLE PR
31、EPARATION paragraph above for moredetailed information): Apply 150 x 150 mm test samples to productionrepresentative substrate panels. Conduct cold slam procedure afterlow bake and after high bake for materials that are processed throughBody an d Assembly paint process. Suspend panels as oriented in
32、-vehicle during the bake cycle. Conduct cold sla m procedure on panelswithout bake also, for materials applied at Metal Stamping Division.Conduct cold slam procedure on panels without ba ke and on panels withpredelivery bake (oriented as in-vehicle) only, for materials appliedat Body and Assembly Di
33、vision after paint processing.3.11 E-COAT COMPATIBILITY No film irregularities (FLTM BV 119-01) or material incompatibilities3.12 WASH RESISTANCE Shall remain unaffected (FLTM BV 116-01) No edge loss or displacement 3.13 SEVERE WASH RESISTANCE Shall remain unaffected (FLTM BV 116-02) No edge loss or
34、 displacement 3.14 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minuteENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 7 of 9 3.15 FOGGING(FLTM BO 116-03, 3 h at 100 C)Fog Number, min As specified in TEST MATRIXFormati on of a clear film, droplets or crystals is cause
35、 forrejection.Bond to aluminum foil in 135 C oven for 30 minutes for evaluation.3.16 ODOR, max As specified in TEST MATRIX(SAE J1351)The material shall be evaluated after exposure to normal processingconditions.3.17 FUNCTIONAL APPROVALMaterials being evaluated for approval to this s pecification sha
36、ll besubject ed to a production trial. Functional trial results must beapproved by the affected assembly operation and Design Engineering.Results shall be made available to Materials Engineering prior tomaterial approval and release.3.18 ADDITIONAL REQUIREMENTSSpecific requirements for material and/
37、or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specification. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.19 SUPPLIERS RESPONSIBILITYAll materials supplied to this
38、specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the materialorig inally approved under this specification, whether or not suchc
39、hange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approval of the Materials Engineeringactivity. Test data, t est samples and a new
40、 code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-
41、M5G62-A2WP 3948-b Page 8 of 9 4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design
42、and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqualified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirement
43、s of this specification (testresults, not nominal values), the material designation a nd code number, andtes t specimens for Ford evaluation. Fords engineering approval of amateri al will be based on its performance to this specification and on anassessment of suitability for intended processes and/
44、or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.5. GENERAL INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 MATERIAL TEST DATA FORMSelected testing from
45、t he list below, mutually agreed to between thesupplier and the respon sible Materials Engineering Activity, must besubmitted prior to init ial material approval. Selected tests, whichare inc luded in the material control plan should be updated asreferenced on the control plan.Specification_Supplier
46、_GSDB Code_Product Code_Manufacturing Plant Location_Physical/Chemical Properties Selected Test Results Product LimitsTest (Mean, Std Dev, (99.994 % ofsample size) production)Total Thickness, mm _ _ _(ASTM D 461, w/o release liner)Total Mass, kg/m2 _ _ _(ASTM D 461, 2/o release liner)Damping Loss Fa
47、ctor(ASTM E 756, 200 hz). At 0 C _ _ _. At 15 C _ _ _. At 30 C _ _ _. At 45 C _ _ _. At 60 C _ _ _Peel Adhesion, N, min. No bake, 1 h dwell _ _ _. No bake, 24 h dwell _ _ _ENGINEERING MATERIAL SPECIFICATIONWSS-M5G62-A1WSS-M5G62-A2WP 3948-b Page 9 of 9 . No bake, 250 h dwell _ _ _. Bake & 250 h at 88 C _ _ _. Bake & 250 h at 38 C & _ _ _100 % R.H.Sustained Heat and Sag _
