1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1993-01-04 EP00E10258796000 Added A2, Update 3 & 4 KW, DG1991-06-03 EP00E01089485000 Released KW conc. J.SchultWP 3948-a Page 1 of 3 THINNER, SUEDE COATING WSK-M14J246-AWSK-M14J246-A21. SCOPEThe materials defined
2、 by these specifications are mixtures of organicsolvents.2. APPLICATIONThese specifications were origi nally released for material used as thinnerfor paint and primer of the “Suede Coating“ paint system.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality
3、 SystemStanda rd Q-101. A mutually acceptable Control Plan as describedth erein 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 THE
4、RMAL 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 reference standard and shall be kept on file at thedesignated material l
5、ab oratory. All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 COMPOSITIONWSK-M14J246-A:Mixture of organic solvents.WSK-M14J246-A2:n-Butyl Acetate 47 %Methyl Ethyl Ketone 48 %Diacetone Alcohol 5 %ENGINEERING MATERIAL
6、 SPECIFICATIONWSK-M14J246-A WSK-M14J246-A2WP 3948-b Page 2 of 3 3.4 PROPERTIES A A23.4.1 Density at 20 C, g/mL 0.865 - 0.875 0.835 - 0.845(ASTM D 1475)3.4.2 Flash Point, C 21 C - 7(ASTM D 56)3.4.3 Refractive Index 1.417 - 1.427 1.389 - 1.391(ASTM D 1218)3.4.4 Color Colorless Colorless3.5 SUPPLIERS R
7、ESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pr ior to making any changes in the properties, composition,co nstruction, color, processing or labelling of the materialorig inally approved
8、under this specification, whether or not suchchange s affect 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 Engineeri
9、ngactivity. Test data, test samples and a new code identification areto be submitted with the request.Substance restrictions imposed by law, regulations or Ford apply tothe mat erials addressed by this document. The restrictions aredefined in Engineering Material Specification WSS-M99P9999-A1.4. APP
10、ROVAL 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.
11、Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of 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
12、 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
13、 material will be added to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONWSK-M14J246-A WSK-M14J246-A2WP 3948-b Page 3 of 3 5. GENERAL INFORMATIONThe information given below is provided for assistance and clarificationand does not represent requirement(s) to this specification.A A25.1 DISTILLATION RANGE, C 125 - 175 80 - 160(ASTM D 1078)5.2 STORAGE STABILITY 2 Years 2 YearsNo change of properties and no color change after a storage time oftwo years in the closed original container.
