1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1990 07 11 DE00E00107002060 Released J. HuebnerWP 3948-a Page 1 of 3 SEALER, SILICONE RUBBER, TWO COMPONENT - FORM ESF-M4G313-AIN PLACE1. SCOPEThe material defined by this specification is a two component, thixot
2、ropicsilicone rubber.2 APPLICATIONThis specification was released originally to define a material used as aform-in-place gasket between the aluminum housing and the plastic leadframeon the integral speed control amplifier. The low durometer of this materialallows for disassembly because it is fully
3、cured before assembling.3. REQUIREMENTS3.1 STATISTICAL PROCESSSuppliers must conform to the requirements of Ford Quality SystemStandard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatistical tools must be used to analyze process
4、/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/orthermal analysis of material/parts supplied to this specification.The IR spectra and thermograms established
5、 for initial approval shallconstitute the reference standard and shall be kept on file at thedesignated material laboratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test
6、 values indicated herein are based on material conditioned ina controlled 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 UNMIXED COMPONENTS PROPERTIES3.4.1 ColorPart A WhitePart B Tra
7、nslucentNOT TO BE USED FOR NEW DESIGN2014 N Status No replacement named L. Sinclair, NAENGINEERING MATERIAL SPECIFICATIONESF-M4G313-AWP 3948-b Page 2 of 3 3.4.2 Viscosity, mPa-s(Brookfield HAF, #7spindle, 1 rpm at 23 +/- 2 C)Part A 4,500,000 - 6,000,000Part B 3,500,000 - 5,000,000Mixed 1:1 4,000,000
8、 - 5,500,0003.4.3 Specific Gravity(ASTM D 792)Part A 1.05 - 1.10Part B 1.04 - 1.09Mixed 1.05 - 1.103.4.4 Gel Time(ASTM D 297 Mixed 1:1 by weight or volume)10 g mass at 120 C, minutes 1.0 max100 g mass at 23 C, minutes 60 +/- 203.5 CURED SEALANT PROPERTIES3.5.1 Hardness, Shore A 11 +/- 5(Mixed 1:1 cu
9、red 1 h 120 C)3.5.2 Elastic Modulus, min 0.3 mPa(ASTM D 412)3.5.3 Tensile Strength, min 4.2 mPa(ASTM D 412)3.5.4 Compression Force(ASTM D 575 Method B)Deflection +/- 0.1mm Pressure mPa % Compression0.6 mm 0.007 - 0.008 3.75 max0.9 mm 0.011 - 0.013 5.60 max1.3 mm 0.015 - 0.017 8.00 max3.5.5 Compressi
10、on Set, max 30 %(ASTM D 395, 120 X C for 24 h)3.6 SILICONE VOLATILITY, max 0.7 %(FLTM AV 102-01)3.7 ADDITIONAL REQUIREMENTS Specific requirements for physical properties of molded or extrudedpar ts shall be specified on the engineering drawing and/orengineering part specification. All critical areas
11、 with respect tothese properties shall be clearly designated on the engineeringdrawing.ENGINEERING MATERIAL SPECIFICATIONESF-M4G313-AWP 3948-b Page 3 of 3 3.8 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which app
12、roval 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 ements, the Suppl
13、ier 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.Substance restrictions impose
14、d by law, regulations or Ford, apply tothe materials addressed by this document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erial
15、s defined by this specification must have prior approval by theresponsible Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier s
16、hall submit to the affected Materials Engineeringactivity its own laboratory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.
