1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Release/Revision1990 08 06 NB00I10043054035 Released B. H. Chen B. C. FernsWP 3948-a Page 1 of 3 SHEETING, BACKING, KNIT NYLON SCRIM ESB-M9H132-A1. SCOPEThe material defined by this sp ecification is a warp knitted
2、 nylon fabric.2. APPLICATIONThis s pecification was released originally for material used as a supportfabric , to be laminated to foam, for the fabrication of seat cushions andseat back trim covers.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality Syst
3、emStand 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 is continuously reduced.3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL A
4、NALYSISFord 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 shallconst itute the reference standard and shall be kept on file at thedesignated material laborato
5、ry. 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 conditioned ina control led atmosphere of 23 +/- 2 C and 50 +/- 5 % rela
6、tivehumidity for not less than 24 h prior to testing and tested under thesame conditions unless otherwise specified.3.4 YARN SIZE AND TYPE(ASTM D 1244)No. 1 and No. 2 Bar 44 dTe x x 9 - 17 f,Polyamide 6 or 6,6ENGINEERING MATERIAL SPECIFICATIONESB-M9H132-AWP 3948-b Page 2 of 3 3.5 CONSTRUCTION, min.(
7、ASTM D 3887)Wales 85 per 10 cmCourses 100 per 10 cm3.6 WEIGHT, min 40 g/m2(FLTM BN 106-01)3.7 BREAKING STRENGTH, min(ASTM D 1682, Grab Method, Avg. of 5 tests)Wales 125 NCourses 140 N3.7.1 Elongation at break, max(ASTM D 1682, Grab Method, Avg. of5 tests)Wales 61 %Courses 120 %3.8 TEAR STRENGTH (Tra
8、pezoid), min(FLTM BN 122-01, Avg. of 5 tests)Wales 35 NCourses 35 N3.9 HEAT SHRINKAGE AND EXPANSION, max(FLTM BN 105-01, except expose for 15 minutesat 100 +/- 2 C)Wales + 2.4 %Courses + 3.4 %3.10 FOGGING(FLTM BO 116-03)Fog Number, min 60Formation of excessive amounts of clear film or droplets is ca
9、use forrejection.3.11 FLAMMABILITY(ISO 3795/SAE J369)Burn rate, max 100 mm/minuteENGINEERING MATERIAL SPECIFICATIONESB-M9H132-AWP 3948-b Page 3 of 3 3.12 ADDITIONAL REQUIREMENTSSpecific requirements for mater ial and or manufactured parts shall bespecified on the engineering dr awing, Engineering pa
10、rts specificationand/or performance specificatio ns. All critical areas with respect tothese properties shall be designated on the Engineering drawing.3.13 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equ ivalent in allchar acteristics to the material upon which appro
11、val was originallygranted.Pri or to making any changes 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
12、 shall notify Purchasing, Toxicology and the affectedMaterials 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 b
13、y law, regulations or Ford apply toth e materials addressed by this document. The restrictions aredefined in Engineering Material specification WSS-M99P9999-A1, unlessa differ ent suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMaterials de
14、fined by this specification must have prior approval by theresponsible Materials Engineeri 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
15、 submit to the affected Materials Engineeringactivi ty its own laboratory report to the specification (test results, notnominal values), the material designation and code numbe r and test specimensfor Ford e valuation. Upon approval, the material will be added to theEngineering Material Approved Source List.
