FORD-WSK-M4D648-A-2005.pdf
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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2005 10 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.7, 3.8, 4 2000 11 08 Revised Updated A. Cockman 1989 05 19 SM/EQ9548 TP Released M. Siewert Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 POLYAMI
2、DE (PA) 66, HEAT STABILIZED MOLDING WSK-M4D648-A COMPOUND 1. SCOPE The material defined by this specification is a heat stabilized polyamide 66 molding compound. 2. APPLICATION This specification was released originally for material used for speedometer drive gears. NOTICE: This material absorbs and
3、 retains moisture. 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 Material specification requirements are to be used for initial qualification of materials. 3.0 STA
4、NDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmo
5、sphere of 23 +/- 2 C and 50 +/- 5% relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. All test materials immediately after processing have to be sealed in containers that are impermeable to water vapor. If the moisture content e
6、xceeds 0.2%, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5% relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MO
7、LDING COMPOUND 3.4.1 Melt Temperature 250 - 265 C (ISO 1218, Method B/ASTM D 789) -,-,- ENGINEERING MATERIAL SPECIFICATION WSK-M4D648-A Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 5 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherw
8、ise specified all tests shall be carried out on injection molded one-end gated test specimens. The following dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall be cut from the center portion of the te
9、st specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Density 1.12 - 1.16 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 70 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test spe
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