1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 14 N-STATUS No replacement named J. Crist, NA 2006 01 30 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.6, 3.7 & 4 1990 07 11 Released DE00E00107002060 J. B. Huebner Printed copies are uncontrolled Copyright 2010, Ford Global Technolog
2、ies, LLC Page 1 of 2 POLYIMIDE (PI), 13% GRAPHITE POWDER/10% PTFE WSF-M4D770-A FILLED SINTERED MOLDING COMPOUND POLYIMIDE (PI), 37% GRAPHITE POWDER FILLED WSF-M4D770-A2 SINTERED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by these specifications are polyimide compou
3、nds filled with PTFE and/or graphite powders, suitable for sintering into finished parts. 2. APPLICATION These specifications were released originally for material used for bearing in the windshield wiper motor. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers an
4、d part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND A A2 3.4.1 Filler Content PTFE Powder, % 9 - 11 - (FLTM BO 106-04, Method A) Graphite Powder, % 12 - 14 35 - 39 (FLTM BO 106-04, Method B) 3.5 MOLDED TEST SPECIMEN 3.5.
5、1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on direct formed specimens with nominal thickness of 3.2 mm. 3.5.2 Density, g/cm3, min 1.43 1.55 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, MPa, min 44.8 41.5 (ASTM D 638, 5.
6、0 mm/min test speed sheet type test specimen according to ASTM E 8) ENGINEERING MATERIAL SPECIFICATIONWSF-M4D770-A/A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 A A2 3.5.3.1 Elongation, %, min 4.0 1.8 (Test Method according to para 3.5.3) 3.5.4 Flexural
7、 Strength, MPa, min 55 55 (ISO 178/ASTM D 790M, Method I, Procedure A) 3.5.5 Compressive Strength, MPa, min 103 103 (ASTM D 695, 13 mm diameter x 25 mm specimen, 1.3 mm/min test speed) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of these specifications. Tensile strength, elongation and flexural strength are measured perpendicular to the pressing direction. Compressive strength is measured in parallel to the processing direction. 5.1 RECYCLING CODE WSF-M4D770-A PI-(CD13+PTFE10)PI-CD37
