1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1992 12 07 C10260431 Released J.JoshiWP 3948-a Page 1 of 3 TAPE, WOVEN WSD-M6H41-A1/A21. SCOPEThe material defined by these specifications are woven tapes.2. APPLICATIONThese s pecifications were re
2、leased originally for materials used in themanufacture of automotive seat cushions and back coverings.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for materi
3、al/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSISFord Motor Company, at its option, may conduct infrared and/ortherma l analysis of materi
4、al/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 the reference stand
5、ard 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 thesame conditions unless
6、 otherwise specified.A1 A23.4 WIDTH, mm 55.0 +/- 4.0 73.0 +/- 4.0(ASTM D 259)3.5 WEIGHT, g/m, min 11.3 15.0(ASTM D 259)ENGINEERING MATERIAL SPECIFICATIONWSD-M6H41-A1/A2WP 3948-b Page 2 of 3 A1 A23.6. CONSTRUCTION(ASTM D 259)Warp Ends/Full Width 160 220Weft Picks/10 cm 80 80Alternative composition s
7、and constructions may be used provided theymeet:Design appearance requirementsComponent Engineering functional and feasibility test requirementsLaboratory tests shown in this specificationAppr oval for the use of such alternative compositions andconstructions must be o btained in writing from Compon
8、ent Engineeringand Materials Engineeri ng. Engineering approved constructions shallbe indicated on the Engineering Material Approved Source List3.7 YARN SIZE AND TYPE(ASTM D 1244)Warp 21 Tex x 2, 100 % polyester and 1yarn as catch threadWeft 39 Tex x 2, 67 % polyester33 % rayonA1 A23.8 BREAKING STRE
9、NGTH, min 800 N 1000 N(ASTM D 1682, Full width stripTest speed 300 mm/minute,initial jaw separation 75 mm)3.9 Tear Strength, min 45 N 45 N(FLTM BN 150-02, except fullwidth of tape to be tested)3.10 Flammability(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.11 ADDITIONAL REQUIREMENTSSpecific requir
10、ements for material and/or manufa ctured parts shall bespecified on the engineering drawing, engineerin g parts specificationand/or performance specifications. All critical areas with respect tothese properties shall be designated on the Engineering drawing.ENGINEERING MATERIAL SPECIFICATIONWSD-M6H4
11、1-A1/A2WP 3948-b Page 3 of 3 3.12 SUPPLIERS RESPONSIBILITYAll materials supplied to this 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,const ruction, colour, processing or l
12、abelling 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 Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain th
13、e 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 or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering
14、 Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasin
15、g, 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 aqualified and authorised representative of the test faci lity, demonstratingful l compliance with all the r
16、equirements 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/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
