1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 04 2014 06 24 Editorial Replaced by WRS-M4D145-B2 L. Soreide, NA 2013 07 17 N Status No replacement named L. Soreide, NA 2000 11 28 Revised Updated A. Cockman 1989 08 31 Released SM/EQ7118 TP K. Gerhards Controlled document at www.MATS Co
2、pyright 2014, Ford Global Technologies, LLC Page 1 of 2 POLYETHYLENE (PE), HIGH DENSITY WSK-M4D659-A MOLDING COMPOUND, RECYCLED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high density polyethylene molding compound produced through the recycling process of
3、the virgin high density polyethylene defined by WSK-M4D645-A. 2. APPLICATION This specification was released originally for material used for non-decorative, low performance parts, e.g. rear lamp covers. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of
4、materials. 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). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 1.0 - 10.0 g/ (ISO 1133/ASTM D 1238, 10 minutes 190 C, 2.16 kg)
5、3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens All test specimens shall be prepared from compression molded sheets 200 x 200 x 4.0 +/- 0.2 mm unless specified otherwise. Preparation of compression molded sheets according to ISO 293/ASTM D 1928, Procedure C, except; aluminum foil, 180 -
6、 200 C molding temperature, 15 +/- 2 C/min cooling rate. The values of this specification are based on unannealed specimens. 3.5.2 Density 0.94 - 0.95 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 18 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm spe
7、cimen, 50 mm/minute test speed) 3.5.4 Flexural Modulus, min 750 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) ENGINEERING MATERIAL SPECIFICATION WSK-M4D659-A Copyright 2014, Ford Global Technologies, LLC Page 2 of 2 3.5.5 Impact Strength, Izo
8、d, min 16 kJ/m (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test, at 23 +/- 2 C) 3.5.6 Heat Deflection Temperature, min 35 C (ISO 75, Method A/ASTM D 648, at 1.82 MPa, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, ma
9、x 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL E
10、XPANSION 11 - 19-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 3.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 3.0% After 30 minutes at 120 C 6.0%
