1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 13 N-STATUS No replacement named J. Crist, NA 2006 01 19 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 05 02 Released EP00E01031535000 L. Rodigas Printed copies are uncontrolled Copyright 2010, Ford Global Technologies
2、, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 20% MINERAL WSK-M4D759-A2 FILLED, SELF-EXTINGUISHING MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% mineral (talc) filled self-extinguishing (containing flame retardant additives) injection
3、 molding compound based on polypropylene homopolymer. 2. APPLICATION This specification was released originally for material used for engine air cleaner assembly. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Sta
4、ndard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 7 - 15 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Mineral Content 18 - 23% (ISO 3451/1, Method A, talc filler 1 h at 750 +/- 25 C, test portion 1 to 2 g) 3.5 MOLDED TEST SPECIMEN 3.
5、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 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
6、 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 Density 1.20 - 1.27 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A2 Printed copies are uncontrolled
7、 Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Tensile Strength at Max Load, min 24 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.4 Flexural Modulus, min 2.9 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm spe
8、cimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.58 - 2.63 GPa (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 specimen A. Specimen length between clamps 35-40 mm. Soak time at e
9、ach temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. Temperature 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/AST
10、M 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 23 +/- 2 C 1.2 kJ/m23.5.6.2 At -40 +/- 2 C 1.0 kJ/m2The 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
11、within the cold box, if not possible, test can be conducted 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 65 C 3.5.7.2 At 0.45 MPa 115 C 3.5.8 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air chan
12、ges/h, 1000 h at 140 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Max Load Change +/- 15% (Test Method per para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A2 Printed copies are uncontrolled Copyright 2010,
13、Ford Global Technologies, LLC Page 3 of 4 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 0 mm/minute (SE) The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 m
14、m with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 80 Formation of excessive amounts of clear film or droplets is cause for rejection. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification.
15、 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5 14-5/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 0.7 - 1.2% 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 0.2 - 0.5% 5.3 ELONGATION AT BREAK, min 2.0 (Test method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSK-M4D759-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
