1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1991 10 28 NB00E10043064070 Revised & Updated B. Chen AJS1984 12 15 CA01-CR527646 ReleasedWP 3948-a Page 1 of 3 NETTING, BONDED POLYPROPYLENE, 2 x 2/25.4 mm ESB-M9H89-A31. SCOPEThe mat erial defined
2、 by this specification is an extruded polypropylenenetting, composed of continuous monofilament yarns, bonded at right anglesto simulate a plain woven fabric.2. APPLICATIONThis sp ecification was released originally for material used in bolsterwire assemblies in foam seat pa ds. The ESB-M9H89-A3 net
3、ting material mustalways be bonded 100 percent to another material to form a composite.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 material/source appro
4、val. 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 material/parts suppli
5、ed 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 standard when tested
6、under 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 otherwise spec
7、ified.3.4 CONSTRUCTION(ASTM D 1910)Strand Count, both directions 20 +/- 2/250 mm3.5 COMPOSITION 100 % polypropylene(ASTM D 629)ENGINEERING MATERIAL SPECIFICATIONESB-M9H89-A3WP 3948-b Page 2 of 3 3.6 COLOR Natural3.7 WEIGHT, min 44 g/m2(FLTM BN 106-01)3.8 BREAKING STRENGTH, min(ASTM D 1682, 76 mm cut
8、 strip, 305 mm/minutecrosshead speed, average of 5 samples)MD 240 NAMD 185 N3.9 FOGGING(FLTM BO 116-03)Fog Number, min 60The formation of droplets or coalescence into a clear film is causefor rejection.3.10 FLAMMABILITY(ISO 3795/SAE J369)Burn Rate, max 100 mm/minuteThis netting material must always
9、be bonded 100 % to a substratematerial to form a composite (localized or spotty adhesion isunacceptable).The composite shall meet the requirements of ES-E97B-1011014-AA,which must be specified on the engineering drawing.3.11 ADDITIONAL REQUIREMENTSSpecific requirements for material and/or manufa ctu
10、red parts shall bespecified on the Engineering drawing, Engineerin g parts specificationand/or performance specifications. All critical areas with respect tothese properties shall be clearly designated on the engineeringdrawing.3.12 SUPPLIERS RESPONSIBILITYAll materials supplied to this specificatio
11、n must be equivalent inal l characteristics to the material 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 affe
12、ct the materials ability to meet the specificationrequir 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 identi
13、fication areto be submitted with the request.ENGINEERING MATERIAL SPECIFICATIONESB-M9H89-A3WP 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 WS S-M99P99
14、99-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.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 sha
15、ll 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 aqualified and authorized representativ
16、e 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 i ntended processes and/or applications. Uponapprov al, the material will be added to the Engineering Material ApprovedSource List.
