1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No replacement named J. Crist, NA 2005 05 27 Revised Inserted 3.0; Deleted 3.1.2, 3.1.4, 3.3 & 4 1977 03 08 Released CW2F-766951-C Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 1 PO
2、LYTETRAFLOUROETHYLENE - 10% GRAPHITE FILLED ESA-M4D375-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 10% graphite filled polytetrafluoroethylene (TFE) compounded specifically to improve wear resistance with aluminum. 2. APPLICATION This material was origina
3、lly released for the Corporate Power Rack and Pinion Steering Gear Piston Seal. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 PART REQUIREMENTS
4、 Testing frequencies for each requirement shall be established by agreement between Supplier Quality Assurance, supplier, and affected Design and Materials Engineering Group. 3.1.1 Specific Gravity 2.05 - 2.15 (ASTM D 792) 3.1.3 Tensile Strength, minimum 1,500 psi (10.4 MPa) (Uncut free seals, perfo
5、rm test per ASTM D 412 - ring specimen) 3.1.3.1 Ultimate Elongation, % minimum 125 3.2 MATERIAL REQUIREMENTS 3.2.1 Material Certification Part fabricators must retain material certification on lots of premixed material or on basic materials if mixing operation is performed in-house as required by Q-101 (2.11 records). Blenders must certify that base materials meet ASTM D 1457. 3.2.2 Specific Gravity 2.05 - 2.15 (ASTM D 792) 3.2.3 Filler Content, % by weight 8 to 12 (FLTM BO 006-03) 3.2.4 Tensile. Strength, minimum 1,500 psi (10.4 MPa) (ASTM D 1457) 3.2.4.1 Ultimate Elongation, % minimum 125
