1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1990 06 28 NE01E10000474072 Revised, Change format E. J. Duda89 10 03 NE01E10000474056 Released E. J. DudaWP 3948-a Page 1 of 3 GASKET, STEEL LAMINATED, RUBBER COATED ESE-M8G231-A1. SCOPEThe mate rial defined by
2、this specification is a steel laminated gasketwhich consists of three layers of steel which are coated on both sides witha very thin layer of rubber.2. APPLICATIONThis specification was released originally for material requiringexc eptional compressive strength as well as excellent sealing at highte
3、mperatures as required by cyliner head gaskets.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 approval. Appropriatestatist ical tools must
4、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 supplied to this specification.The IR spectra
5、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 testedunder the same conditions.3.3 Constructi
6、onThe gasket consists of three steel plates coated on both sides witha micro thin layer of rubber.3.4 Block Side Plate3.4.1 Metal ASTM A 5913.4.2 Hardness, Vickers 90 - 125(ASTM E 384)3.4.3 Zinc Coating, Both Sides, min 16 g/m2(ASTM A 90)ENGINEERING MATERIAL SPECIFICATIONESE-M8G231-AWP 3948-b Page 2
7、 of 3 3.4.4 Elastomer Coating, Both Sides (see paragraph 5.1)3.4.4.1 Coating Thickness, per Side 15 - 40 (FLTM BI 17-1) micrometer3.5 Middle Plate3.5.1 Metal SAE J405 30301-3/4 H3.5.2 Elastomer Coating, Both Sides (see paragraph 5.2)3.5.2.1 Coating Thickness, per Side 25 +/- 5(FLTM BI 17-1) micromet
8、re3.6 Cylinder Head Side Plate3.6.1 Metal SAE J405 303043.6.2 Elastomer Coating, Both Sides (see paragraph 5.1)5.4.2.1 Coating Thickness per Side 15 - 40 (FLTM BI 17-1) micrometer3.7 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the
9、 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 affect the materials ability to meet the specification
10、requir 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.Subst
11、ance restrictions imposed 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. APPROV
12、AL OF MATERIALSMat erials 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. Upo
13、nrequest, the Supplier shall 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 Engin
14、eering Material Approved Source List.ENGINEERING MATERIAL SPECIFICATIONESE-M8G231-AWP 3948-b Page 3 of 3 5. GENERAL INFORMATIONThe information below is provided for clarification and assistance inmeeting the requirements to the specification.5.1 FluorocarbonBonded according to CMG-PH5.2 Nitrile-butadieneBonded according to MS-210
