1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1994 04 19 NB00E10043064128 Revised B.H. Chen A.J. Stocki93-06-14 NB00I10043054258 Released B.H. Chen A.J. StockiWP 3948-a Page 1 of 4 FABRIC, WOVEN, CONVERTIBLE BOW LISTING WSB-M9H138-A1. SCOPEThe ma teria
2、l defined by this specification is a woven polyester sheeting.2. APPLICATIONThis s pecification was released originally for material used as a supportfabric for listings in convertible top assemblies. Any other applicationmust be approved by the responsible Materials Engineering Activity.3. REQUIREM
3、ENTS3.1 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 material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation i
4、n 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 material/parts supplied to this specification.The IR spectra or therm ograms established for initial approval shallcons
5、t 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 standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test values indicated herein are
6、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 otherwise specified.3.4 COMPOSITION 100 % polyester(ASTM D 629)ENGINEERING MATERIAL SPECIFICATIONWSB-M9H138-AWP 3
7、948-b Page 2 of 4 3.5 YARN SIZE(ASTM D 1244)Warp 49.2 tex (polyester)Fill 59.0 tex (polyester)3.6 CONSTRUCTION, min.(ASTM D 3775)Warp 900 per 10 cmFill 500 per 10 cm3.7 WEIGHT, min 100 g/m2(FLTM BN 106-01)3.8 BREAKING STRENGTH, min(ASTM D 1682, Grab Method, Avg. of 5 tests,each direction)Warp 265 NF
8、ill 218 N3.8.1 Elongation at break, max(ASTM D 1682, Grab Method, Avg. of 5 tests, each direction)Warp 61 %Fill 120 %3.9 TEAR STRENGTH (Trapezoid), min(ASTM D 1117, Integration method*, Avg. of 5 tests, each direction)Warp 32 NFill 25 N*Inte gration method as approved by the responsible MaterialsEng
9、ineering Activity.3.10 HEAT SHRINKAGE AND EXPANSION, max(FLTM BN 105-01, except expose for 15 minutes at 100 +/- 2 C)Warp +/- 2.4 %Fill +/- 3.4 %ENGINEERING MATERIAL SPECIFICATIONWSB-M9H138-AWP 3948-b Page 3 of 4 3.11 FOGGING(FLTM BO 116-03)Fog Number, min 60Form ation of a clear film, droplets or c
10、rystals is cause forrejection.3.12 FLAMMABILITY(ISO 3795/SAE J369)Burn rate, max 100 mm/minute3.13 ADDITIONAL REQUIREMENTSSpecific requirements for mater ial and or manufactured parts shall bespecified on the engineering dr awing, Engineering parts specificationand /or performance specifications. Al
11、l critical areas with respectto these properties shall be designated on the Engineering drawing.3.14 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equ ivalent in allchar acteristics to the material upon which approval was originallygranted.Pri or to making any changes
12、in the properties, composition,construction, color, processing or labeling of the mater ial originallyapproved under this specificati on, whether or not such changes affectthe materials ability to meet the specification requirements, theSupplier shall notify Purchasing, Toxicology and the affectedMa
13、terials Engineering activity of the proposed changes and obtain thewritten approval of the Materials Engineering activity. Test data,test sam ples and a new code identification are to be submitted withthe request.Substance restrictions imposed by law, regulations or Ford apply toth e materials addre
14、ssed by this document. The restrictions aredefined in Engineering Material specification WSS-M99P9999-A1.ENGINEERING MATERIAL SPECIFICATIONWSB-M9H138-AWP 3948-b Page 4 of 4 4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Materials Engineeri
15、ng activity. Suppliers desiring approval oftheir mat erials shall first obtain an expression of interest from theaffecte d Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringact ivity a completed copy of their laboratory
16、 test reports, signed by aqualified and authorized repres entative of the test facility, demonstratingfu ll compliance with all the requirements of this specification (testresults, not nominal values), t he material designation and code number, andtest spec imens for Ford evaluation. Fords engineering approval of amateria l will be based on its performance to this specification and on anassess ment of suitability for intended processes and/or applications. Uponapproval, the material will be added to the Engineering Material ApprovedSource List.
