1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 11 19 N-STATUS No replacement named J. Crist, NA 2005 05 31 Revised Inserted 3.0; Deleted 3.1.2, 3.1.4, 3.3 & 4 1976 09 03 Released CBG2-766806-C Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 PO
2、LYTETRAFLOUROETHYLENE, 15% GLASS FILLED ESA-M4D370-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 15% (1/32 in (0.8 mm) long milled) glass fiber filled polytetrafluoroethylene (TFE) compounded specifically to improve creep and wear resistance. 2. APPLICATION
3、 This specification was released originally for material used for the power steering gear worm, control valve sleeve and piston seal. 3. REQUIREMENTS Testing frequencies for each requirement shall be established by agreement between supplier quality assurance, supplier and affected design and materi
4、als engineering group. 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 3.1.1 Specific Gravity 2.14 - 2.24 (ASTM D 792) 3.1.3 Tensile Strength, min 2,000 psi
5、 (13.8 MPa) (Uncut free seals, perform test per ASTM D 412, ring specimen) Elongation, ultimate, min 150% 3.2 MATERIAL 3.2.1 Material Certification Part fabricators must retain material certification on lots of premixed material or on basic material if mixing operation is performed in-house as requi
6、red by Q101 (2.12 records). Blenders must certify that base materials meet ASTM D 1457. 3.2.2 Specific Gravity 2.14 - 2.24 (ASTM D 792) 3.2.3 Filler Content, by weight 13 - 17% (FLTM BO 006-01, except conduct test at 649 +/- 11 C and omit step 3 in procedure.) ENGINEERING MATERIAL SPECIFICATIONESA-M
7、4D370-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.2.4 Tensile Strength, min 2,000 psi (13.8 MPa) (ASTM D 1457) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 DYE PENETRANT INSPECTION (MS6-22 or equivalent) For detection of surface cracks or discontinuities this test may be performed on molded sleeves after sintering.
