1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1996 06 18 Revised Revised para 3.4.2 L. Gullen1995 05 26 Activated L. GullenWP 3948-a Page 1 of 4 LAMINATE, POLYOLEFINIC AIR FILLED CELLS, HEAT WSS-M99G164-A2BONDED, HEAT SHIELD1. SCOPEThe material defined by th
2、is specification consists of a cellular airfilled polyolefinic sheet(s) with foil laminated to one or both sides asrequired by the end use. The laminate if formed without the use ofadhesives. Cell material, wall thickness, and foil thic kness may be variedas required for particular applications.2. A
3、PPLICATIONThis material was released orig inally for use as a heat shielding materialfor ch assis and underhood components such as plastic fuel tanks, steeringgears, powertrain isolation hydromounts, and exhaust system heat shields.This m aterial is used primarily for protection from radiant heat so
4、urces.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers 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. T
5、his plan must bereviewed and approved b y the relevant Ford Materials activity and/orFor d 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 produce
6、rs using this material in their products, must use Fordapproved materials and must conform to a process control plan whichhas been approved by STA and/or the relevant Materials Activity.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/
7、ortherma l 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 corr
8、espond to the reference standard when testedunder the same conditions.ENGINEERING MATERIAL SPECIFICATIONWSS-M99G164-A2WP 3948-b Page 2 of 4 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 %
9、relativehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 CONSTRUCTION3.4.1 Air Filled Polyolefinic Cells. Thickness to be specifiedon engineeringdrawing. Cell Wall Thickness, nom to be specifiedon engineeringdrawing. Diameter of Cell
10、 9.5 +/- 0.5 mm. Melting Point to be specifiedon engineeringdrawing3.4.2 Aluminum Foil. Type 1145 alloy; dead soft, oil free. Thickness To be specified on the engineeringdrawing. Usage One or both sides (to b e specifiedon the engineering drawing)3.5 PHYSICAL PROPERTIES (LAMINATE)3.5.1 Tensile Stren
11、gth, min 170 N(ASTM D 751)3.5.2 Bursting Strength, min 245 kPa(ASTM D 774)3.5.3 Tear Strength (Trapezoid), min 32 N(ASTM D 1117)3.5.4 Tear Strength (Tongue), min 22 N(ISO 4674, Method A2)3.5.5 Puncture Resistance, min 220 N(FTM 101C, Method 2031)3.5.6 Cold Flexibility, max - 40 C(ASTM D 2136)ENGINEE
12、RING MATERIAL SPECIFICATIONWSS-M99G164-A2WP 3948-b Page 3 of 4 3.5.7 Flammability(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.6 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctured parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/o
13、r performance specification. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally g
14、ranted.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 suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purc
15、hasing, 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 code identification areto be submitted with the request.Substance restrictions imposed by law, regulations
16、 or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Materials Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiri
17、ng approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their laboratory test reports, signed by aqual
18、ified and authorized representative of the test faci lity, demonstratingful l compliance with all the requirements 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
19、 be based on its performance to this specification and on anassessment of suitability for intended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONWSS-M99G164-A2WP 3948-b Page 4 of 4 5. GENERAL
20、 INFORMATIONThe information given below is provided for clarification and assistancein meeting the requirements of this specification.5.1 MAXIMUM CONDUCTION TEMPERATURE 105 CThe heat protection properties will differ signi ficantly depending onthe foil thickness, lam inate construction (one or two side foil) andcomponent design.
