1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Release No. Released1993 12 10 C10352523 Released D.G. GreenWP 3948-a Page 1 of 3 THINNER, GENERAL, FOR USE WITH WSK-M14J263-AAUTOMOTIVE REFINISH PRODUCTS1. SCOPEThe mate rial defined by this specification is a mixture of orga
2、nicsolvents.2. APPLICATIONThis spe cification was originally released for material used as a “slow“thinner for two pack isocyanate free repair priming paint systems.3. REQUIREMENTS3.1 STATISTICAL PROCESSSupplie rs must conform to the requirements of Ford Quality SystemStanda rd Q-101. A mutually acc
3、eptable 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 THERMAL ANALYSISFord Motor Company, at it
4、s 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 lab oratory. All samples shall produce
5、IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.3 COMPOSITION % by wt.Diacetone Alcohol 1 - 5n-Butyl Alcohol 30 - 60 Methoxy-1-Propylacetate-2 30 - 60 Butyl Glycol Acetate 5 - 10Propylene Glycol Monomethyl Ether 10 - 30 Aromatic Hydrocarbons
6、 5 - 10 3.4 PROPERTIES3.4.1 Density at 20 C 0.920 +/- 0.020 g/mL(ASTM D 1475)ENGINEERING MATERIAL SPECIFICATIONWSK-M14J263-AWP 3948-b Page 2 of 3 3.4.2 Flash Point 27 C(ASTM D 56)3.4.3 Refractive Index Initial sample +/- 0.002(ASTM D 1218)3.4.4 Colour Colourless3.5 SUPPLIERS RESPONSIBILITYAll materi
7、als 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 under this specificatio
8、n, 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 Engineeringactivity. Test data,
9、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. APPROVAL OF MATERIALSMat e
10、rials defined by this specification must have prior approval by theresp onsible Materials Engineering activity. Suppliers desiring approvalof thei r materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Suppli
11、er 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, not nominal values),
12、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
13、 to the Engineering Material ApprovedSource List.ENGINEERING MATERIAL SPECIFICATIONWSK-M14J263-AWP 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.5.1 DISTILLATION RANGE 117 - 195 C(ASTM D 1078)5.2 STORAGE STABILITY2 yearsNo change of properties and no color change after a storage time oftwo years in the closed original container.
