FORD-WSK-M4D578-A-2005.pdf
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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2005 09 07 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8 & 4 1988 02 29 Release SM/EQ2386 TP Siewert Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 4 POLYAMIDE (PA) 6, IMPACT MODIFIED, WSK-M4D578-A
2、MOLDING COMPOUND 1. SCOPE The material defined by this specification is a polyamide 6 molding compound modified with a polyethylene copolymer. 2. APPLICATION This specification was released originally for material used for fastening elements of headlamps. NOTICE: This material absorbs and retains mo
3、isture. Part design and tolerances must accommodate changes in part dimensions and physical properties due to moisture absorption or loss in the service/assembly environment. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the
4、Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONDITIONING AND TEST CONDITIONING All test values indicated herein are based on material and specimens with moisture content not exceeding 0.2% (test according to ISO R 960, Method B/ASTM D 789). All test materials immedi
5、ately after processing have to be sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.2%, conditioning the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 kPa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% rel
6、ative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MOLDING COMPOUND 3.4.1 Melting Point, min 215 C (ISO 1218, Method B/ASTM D 789) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests sha
7、ll be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATION WSK-M4D578-A Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 4 The following dimensions are required: A. 150 x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B.
8、 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.08 - 1.11 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Stre
9、ngth at Yield, min 60 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3 1 Elongation at Break, min 15% (test method acc. to 3.5.3) 3.5.4 Flexural Modulus, min 2.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm su
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