1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 03 17 NB00I10043054317 Released D.Henrickson AJS BCFWP 3948-a Page 1 of 3 CORD, POLYESTER, BRAIDED WSB-M6H44-A1. SCOPEThe mat erial defined by this specification is a round cord consisting ofa braided
2、polyester jacket and filled with polyester fiber.2. APPLICATIONThis specification was released originally for material used as a trunk lidtie down cord in 1994 vehicles.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually
3、 acceptable Control Plan as describedtherein is required for material/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
4、 its option, may conduct infrared and/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 produ
5、ce IR spectraand thermograms that correspond to 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 th
6、an 24 h prior to testing and tested under thesame conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSB-M6H44-AWP 3948-b Page 2 of 3 3.4 CONSTRUCTION AND YARN DESCRIPTION(ASTM D 3775/ASTM D 1244)3.4.1 Diameter, range 5.0 +/- 0.2 mm3.4.2 Picks/cm, range 4.3 +/- 0.53.4.3 Filler,
7、min Polyester, 7.1 ktex, 0 twist3.4.4 Braid, min Polyester, 110 tex, 16 strandplain braid (8 x 2), 0 twist3.5 YIELD, +/- 10 % Tolerance 51 m/kg3.6 BREAKING STRENGTH, min 5.0 kN(ASTM D 5034, Grab Method,avg of 5 tests)3.6.1 ELONGATION AT BREAK, min 15 %(ASTM D 5034, Grab Method,avg of 5 tests)3.7 FLA
8、MMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.8 FOGGING(FLTM BO 116-03)Fog Number, min 60Formati on of a clear film, droplets or crystals is cause forrejection.3.9 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the materi
9、al 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 suchchange s affect the materials ability to meet the specificationrequir
10、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 code identification areto be submitted with the request.ENGINEERING
11、MATERIAL SPECIFICATIONWSB-M6H44-AWP 3948-b Page 3 of 3 Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMat erials defined by this sp
12、ecification 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 and Materials Engineering activity. Uponrequest, the Supplier shall submit to the a
13、ffected 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 requirements of this specification (testresults, not nominal values), the material designation
14、 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 i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
