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 3.2, 3.3 & 4 1979 05 25 Released R# 5-8/CH8H-RD834190 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 1 POLY
2、TETRAFLUOROETHYLENE, 25% GLASS FILLED ESH-M4D370-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 25% fiberglass filled polytetrafluoroethylene (TFE) compounded to minimize wear. 2. APPLICATION This specification was released originally for material used for t
3、he air conditioning compressor piston rings. 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 MATERIAL 3.1.1 Density 2.17 - 2.30 g/cm3(ASTM D 792) 3.1.2 Filler Content, by weight 23 - 27% (FLTM BO 006-01, except conduct test at 650 +/- 10 C, omit step 3 in procedure)
