1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1995 03 10 Revised 1978 06 01 CAHI-RD572066-39 Metricated and Retyped J.M. T.J.W.1973 04 25 AL1-6000-298 ReleasedWP 3948-a Page 1 of 3 FABRIC, BACKING - MULTIFILAMENT NYLON KNIT ESB-M9H73-A1. SCOPEThe m aterial d
2、efined by this specification is a knitted, multifilamentnylon fabric of good commercial quality.2. APPLICATIONThis s pecification was released originally for material used as a backingfabric for cut foam surfaces to promote slippage of knit bodycloth overfoam padding.3. REQUIREMENTS3.1 STATISTICAL P
3、ROCESSSupplie 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 in the final product i
4、s 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 and thermograms established for i nitial approval shallconst itute the referenc
5、e 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 based on ma terial c
6、onditioned 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 CONSTRUCTION 98 +/- 8 wales/100 mm(ASTM D 3887)94 +/- 12 courses/100 mm3.5 COMPOSITION 100 % Nylon(ASTM D 629
7、)ENGINEERING MATERIAL SPECIFICATIONESB-M9H73-AWP 3948-b Page 2 of 3 3.6 YARN DESCRIPTION AND SIZE(ASTM D 1244)Wales and Courses 4.4 tex (nylon, multifilament)3.7 WEIGHT, min 34 g/m2(ASTM D 3887)3.8 BREAKING STRENGTH, min(ASTM D 5034)Wales 111 NCourses 67 N3.9 TEAR STRENGTH, Trapezoid(ASTM D 1117, In
8、tegration method*)Wales 45 NCourses 27 N* As approved by Materials Engineering3.10 BURST STRENGTH, min 345 kPa(ASTM D 3887)3.11 STRETCH AND SET, %, range(SAE J855, except use 4.5 kg weight)Stretch SetWales 20 - 50 0 - 6Courses 70 - 130 0 - 703.12 SHRINKAGE, %, max(FLTM BN 105-01)Steam Wales 15Course
9、s 10Heat (5 minutes at 175 C) Wales 15Courses 153.13 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minute3.14 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.ENGINEERING MA
10、TERIAL SPECIFICATIONESB-M9H73-AWP 3948-b Page 3 of 3 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 specificatio
11、nrequir 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.Subs
12、tance restrictions imposed by law, regulations 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 theresp onsible Ma
13、terials 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 affected Materials Engineeringactivity a completed copy of
14、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 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.
