1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 06 26 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1995 06 16 Revised 3.1 updated, 3.7.1 added M. Dumitrescu 1995 01 31 Activated M. Dumitrescu Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Pag
2、e 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, WSL-M4D910-A 40% MINERAL FILLED, 25% MINIMUM RECYCLED CONTENT MOLDING COMPOUND 1. SCOPE The material defined by this specification is a 40% mineral (talc) filled injection molding compound based on 25% minimum recycled polypropylene homopolymer from post cons
3、umer sources. 2. APPLICATION This specification was released originally for material used for fan shroud. 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
4、A). 3.1.1 All requirements of this specification, identified by symbol(s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 6 - 10 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.4.2 Mineral Content 35 - 45% (ISO 3451/1, Method A, talc filler 30 minute
5、s at 550 +/- 50 C, test portion 1 to 2 g) 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 dimensions are required: A. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO
6、 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. ENGINEERING MATERIAL SPECIFICATIONWSL-M4D910-APrinted copies are uncontrolled Copyri
7、ght 2006, Ford Global Technologies, LLC Page 2 of 5 3.5.2 Density 1.22 - 1.32 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile Strength at Max Load, min 29 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed (unfilled), 5 mm/min (filled) (s) 3.5.4 Flexural Modulus, min 3.0 GP
8、a (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.75 - 2.80 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 specim
9、en A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a Shear Modulus versus Temperature curve shall be plotted for -50 to +160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on
10、page 5. (s) 3.5.6 Impact Strength, Izod, min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 2.0 kJ/m 3.5.6.2 At -40 +/- 1 C 1.4 kJ/mThe test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Lo
11、w temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 79 C 3.5.7.2 At 0.45 MPa 127 C ENGINEERING MATERIAL SPECIFICATIONWSL-M4D910-APrinted copies are
12、uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/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 Change +/- 25% (
13、Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change +/- 25% (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 material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth sur
14、face. 3.7.1 Regrind 20% maximum of regrind produced from molded parts is acceptable, providing all requirements of this specification are met. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFI
15、CIENT OF LINEAR THERMAL EXPANSION 5 10-5/ C (ASTM E 831 TMA) 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 0.08 - 0.12% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80
16、 C 0 - 0.15% . After 30 min at 120 C 0.1 - 0.3% ENGINEERING MATERIAL SPECIFICATIONWSL-M4D910-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 5.3 ELONGATION AT YIELD, min 2.0% (Test Method according to para 3.5.3) 5.4 HARDNESS, DUROMETER D, 65 - 75 (ISO 868/
17、ASTM D 2240, 15 s dwell) 5.5 WATER ABSORBTION, max 0.05% (ISO 62, 24 hour immersion, 50 +/- 1 mm diameter x 3.2 +/- 0.2 mm thick specimen) 5.6 DIMENSIONAL STABILITY OF MOLDED PART (30 minutes at 135 +/- 2 C) No evidence of dimensional change 5.7 LOW TEMPERATURE FLEXIBILITY OF No evidence of failure
18、MOLDED PART AT -29 C Test Method: Mount the molded part in horizontal position. Condition part 16 h at -29 C and test at -29 C. Drop a 48 mm diameter steel ball (454 g minimum weight) from a height of 305 mm onto the test piece. 5.8 RECYCLING CODE PP-TD40 ENGINEERING MATERIAL SPECIFICATIONWSL-M4D910-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5
