FORD WSK-M4D721-A-2013 POLYETHYLENE (PE) MOLDING COMPOUND HIGH DENSITY MEDIUM MELT FLOW RATE TO BE USED WITH FORD WSS-M99P1111-A .pdf

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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2013 07 17 N Status No replacement named L. Soreide, NA 2005 12 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 aluminum foil, 180 - 200 C molding temperature, 15 +/- 2 C/min cooling rate. The values of this specification are

2、based on unannealed specimens. 3.5.2 Density 0.952 - 0.965 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Yield, min 26 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Yield, min 200% (Test Method accordin

3、g to para 3.5.3) 3.5.4 Flexural Modulus, min 1.2 GPa (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-M4D721-A Copyright 2013, Ford Global Technologies, LLC Page 2 of 4 3.5.5 Shear Modulus at 23 C 627 - 940 MPa

4、 (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen approx. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of compression molded sheet. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additiona

5、lly, a Shear Modulus vs. Temperature curve shall be plotted for -50 to +100 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10

6、 specimens for each test) 3.5.6.1 At 23 +/- 2 C 15 kJ/m2 3.5.6.2 At -40 +/- 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

7、 outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min 44 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

8、aged 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, max -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 requ

9、ired for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATION WSK-M4D721-A Copyright 2013, Ford Global Technologies, LLC Page 3 of 4 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the req

10、uirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 15-5/ 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 2.0% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 1.0% After 30 minutes at 120 C 2.0% ENGINEERING MATERIAL SPECIFICATION WSK-M4D721-A Copyright 2013, Ford Global Technologies, LLC Page 4 of 4