1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action ChangesG01G02G02G03 G05G06 G01G07 G08G09G0AG0BG0CG0DG0AG0EG0F G08G10 G11G0BG12G13G14G15WP 3948-a Page 1 of 2SOLVENT, PURGE MATERIAL FOR SOLVENTBORNE WSS-M14J518-AENAMELS1. SCOPEThe material defined by this specification
2、 is a blend of aromatic andaliphatic hydrocarbons.2. APPLICATIONThis specification was released originally for material used to p urgepaint lines during color changing in automatic color spray systems.3. REQUIREMENTS3.1 QUALITY SYSTEM REQUIREMENTSMaterial suppliers and part producers must conform to
3、 QualitySystem Requirements, QS-9000. Material specification requirementsare to be used for initial qualification of materials. A ControlPlan for ongoing production verification is required. This planmust be reviewed and approved by the relevant Ford Materialsactivity and/or Ford Supplier Technical
4、Assistance (STA) prior toproduction parts submission. Appropriate statistical tools must beused to analyze process/product data and assure consistentprocessing of the materials.Part producers using this material in their products, must use Fordapproved materials and must conform to a process control
5、 plan whichhas been approved by STA and/or the relevant Materials Activity.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
6、for initial approvalshall constitute the reference standard and shall be kept on fileat the designated material laboratory. All samples shall produce IRspectra and thermograms that correspond to the reference standardwhen tested under the same conditions.3.3 CONDITIONING AND TEST CONDITIONSAll test
7、values indicated herein are based on material conditionedin a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relativehumidity for not less than 24 h prior to testing and tested underthe same conditions unless otherwise specified.ENGINEERING MATERIAL SPECIFICATIONWSS-M14J518-AWP 3948-b Page 2 of
8、23.4 COMPOSITIONToluene 30 - 60 %Methyl Ethyl Ketone 30 - 60 %Xylene 10 - 30 %3.5 SPECIFIC GRAVITY AT 20 C 0.834 - 0.844(ASTM D 891B)3.6 COLOR Clear3.7 FLASH POINT - 7 C(ASTM D 56)3.8 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inall characteristics to the
9、 material upon which approval wasoriginally granted.Prior to making any change in the properties, composition,construction, color, processing or labeling of the materialoriginally approved under this specification, whether or not suchchanges affect the materials ability to meet the specificationrequ
10、irements, 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, test samples and a new code identification areto be submitted with the request.Substance r
11、estrictions imposed by law, regulations or Ford, applyto the materials addressed by this document. The regulations aredefined in Engineering Materials Specification WSS-M99P9999-A1.4. APPROVAL OF MATERIALSMaterials defined by this specification must have prior approval by theresponsible Materials En
12、gineering activity. Suppliers desiring approvalof their materials shall first obtain an expression of interest from theaffected Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity a completed copy of their labora
13、tory test reports, signed by aqualified and authorized representative of the test facility,demonstrating full compliance with all the requirements of thisspecification (test results, not nominal values), the materialdesignation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on itsperformance to this specification and on an assessment of suitabilityfor intended processes and/or applications. Upon approval, the materialwill be added to the Engineering Material Approved Source List.
