1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 17 N-STATUS No replacement named R. Lord 2006 01 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 10 01 Released EP00E01031540000 L. Rodigas Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LL
2、C Page 1 of 5 POLYPROPYLENE (PP) COPOLYMER WSK-M4D760-A SELF-EXTINGUISHING MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a self-extinguishing (containing flame retardant additives) injection molding compound based on polypropylene copolymer. 2.
3、 APPLICATION This specification was released originally for material used for a part of engine air cleaner system. 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
4、-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 1.0 - 10 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. The following
5、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 test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.5.2 Den
6、sity 0.92 - 0.96 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATION WSK-M4D760-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Yield, min 20 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 m
7、m specimen, 5 mm/min test speed) 3.5.3.1 Elongation at Yield, min 8% (Test according to para 3.5.3) 3.5.4 Flexural Modulus, min 800 MPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 390 - 590 MPa (ASTM D 4065, forced c
8、onstant 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 specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature
9、curve shall be plotted for -50 to +150 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, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 A
10、t 23 +/- 2 C 6.0 kJ/m2 3.5.6.2 At -40 +/- 2 C 1.5 kJ/m2 3.5.6.3 At 10 +/- 2 C 3.0 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
11、 outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 40 C 3.5.7.2 At 0.45 MPa 58 C ENGINEERING MATERIAL SPECIFICATION WSK-M4D760-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Pag
12、e 3 of 5 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 130 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Yield Change +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Streng
13、th, 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 Self-extinguishing The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (SAE J1756
14、, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 80 Formation of clear film, droplets or crystals is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specifi
15、cation. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 10 20-5/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 1.6% ENGINEERING MATERIAL SPECIFICATION WSK-M4D760-A Printed copies are uncontroll
16、ed Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.2 - 0.5 . After 30 min at 120 C 0.1 - 0.5 5.3 HARDNESS, DUROMETER D 64 - 70 (ISO 868/ASTM D 2240, 15 s dwell) ENGINEERING MATERIAL SPECIFICATION WSK-M4D760-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
