1、ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number POLYBUTYLENE TEREPHTHALATE (PBT), IMPACT ESB-M4D462-A3 MODIFIED - 30% GLASS FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a glass fiber reinforced, impact modified polybutyle
2、ne terephthalate resin with high heat resistance, good electrical resistance, and improved dimensional stability. 2. APPLICATION This specification was released originally for material used for electrical connectors. 3. REQUIREMENTS The material shall meet all requirements of ESF-M4D354-A7 with the
3、following additions/exceptions: 3.1 VIRGIN MOLDING COMPOUND 3.1.1 Melt Flow Rate 8.0 - 13.0 g/10 min (ASTM D 1238, 250 0.2 EC, 2.16 kg) 3.2 MOLDED TEST SPECIMEN 3.2.1 Flexural Elongation at Break, min 3.5% (ASTM D 790, maximum strain, Method I, 3.2 x 12.7 x 127 mm specimen, 5 mm/min test speed) 3.2.
4、2 Flexural Modulus, min 6900 MPa (ASTM D 790) 3.3 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. WP 3948-a Page 1 of 2 Date Action Changes 2010 06 11 N-STATUS No replacement n
5、amed A. Pan, APA 1986 01 09 C9P1-PR533649-1 Released ENGINEERING MATERIAL SPECIFICATION ESB-M4D462-A3 Prior to making any change in the properties, composition, construction, color, processing or labelling of the material originally approved under this specification, whether or not such changes affe
6、ct the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code iden
7、tification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified
8、on the engineering document for the application. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected
9、Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity its own laboratory report to the specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evalu
10、ation. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION At the option of the responsible Ford activity, the following data is required for all new suppliers submitting materials for engineering approval. 5.1 MOLD SHRINKAGE 0.005 - 0.007 (ASTM D 955, after 48 h, injection molded sample) -5 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 1.98 x 10 /EC (ASTM D 696) 5.3 HEAT DEFLECTION TEMPERATURE, min 200 EC (ASTM D 648, 0.45 MPa) WP 3948-b Page 2 of 2
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