1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2010 12 08 Revised See Summary of Revisions J. Souza, SA 2009 09 22 Revised Removed Shear Modulus due to no exception allowed in remarks field J. Souza, SA 1989 11 17 Released SM/EQ9859 TP K H Gerhards Printed copies are uncontrolled Copyrigh
2、t 2010, Ford Global Technologies, LLC Page 1 of 3 POLYETHYLENE (PE), MOLDING COMPOUND, WSK-M4D695-A HIGH DENSITY, LOW MELT FLOW RATE 1. SCOPE The material defined by this specification is a polyethylene molding compound with high density and low melt flow rate. 2. APPLICATION This specification was
3、released originally for material used for windshield washer bottle. 3. REQUIREMENTS 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 F
4、low Rate, max 2.0 g/10 minutes (ISO 1133/ASTM D 1238, 190 C, 5.0 kg) 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 accord
5、ing to ISO 293/ASTM D 1928, Procedure C, except; aluminum foil, 180 - 200 C molding temperature, 15 +/- 2 C/min cooling rate. The values of this specification are based on unannealed specimens. 3.5.2 Density 0.945 - 0.960 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yie
6、ld, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 100% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATION WSK-M4D695-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, L
7、LC Page 2 of 3 3.5.4 Flexural Modulus, min 1.0 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.6 Impact Strength, Izod, min (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) 3.5.6.1 At
8、 23 +/- 2 C 11 kJ/m2 3.5.6.2 At -40 +/- 2 C 5 kJ/m2 3.5.6.3 At -20 +/- 2 C 7 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box, if not possible, test can be conducted outs
9、ide, but within 5 s. 3.5.7 Heat Deflection Temperature, min 40 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen, at 1.82 MPa) 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 120 +/- 2 C. Unaged property values shall be determined at the time of the aged
10、properties determination) 3.5.8.1 Tensile Strength Change +/- 15% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change -15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for m
11、aterial 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 EXPANSION 16-5/ C (ASTM D 696) ENGINEERING MATERI
12、AL SPECIFICATION WSK-M4D695-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 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 min at 120 C 6.0% 6. SUMMARY OF REVISIONS 2010 12 08 Revised - Impact Strength, Izod, at -20 +/- 2C, min 10 kJ/m2 changed to 7 kJ/m2 2009 09 22 Removed Item 3.5.5 Rate of Shear Modulus at 23 C
