1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2011 03 01 N-Status No replacement named A Pan, APA 2005 10 14 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1999 03 25 Activated S. Degrood, G. Alent Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC P
2、age 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, 40% MINERAL MIX WSK-M4D644-A4 FILLED HIGH HEAT MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an injection molding compound based on polypropylene homopolymer, filled with a mineral mixture of 32% talc
3、and 8% titanium dioxide (Ti02). 2. APPLICATION This specification was released originally for material used for instrument clusters. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Product
4、ion Materials (WSS-M99P1111-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 4 - 8 g/ (ISO 1133, 230 C, 2.16 kg) 10 minutes (s) 3.4.2 Filler Content 40-45% (ISO 3451/1, Method
5、 A, ash: talc/titanium dioxide (TiO2), 1 h at 950 +/- 50 C, test portion 1 to 2 g) Note: 45% ash talc/TiO2 corresponds to 39% talc and 6% titanium dioxide. Calculated percentages of Ti02 may be dependant on the content of volatile matter in the compound. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of
6、 Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A4 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 2 of 5 The following dimensions are required
7、: 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 Density 1.22 - 1.36 (ISO 1
8、183, Method A) g/cm3 (s) 3.5.3 Tensile Strength at Max Load, min 24 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) (s) 3.5.4 Flexural Modulus, min 3.6 GPa (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
9、 C 1.08 - 2.08 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 each temperature interval - 3 minutes minimum) Additi
10、onally, a Shear Modulus versus 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 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 eac
11、h test) 3.5.6.1 At 23 +/- 2 C 1.7 kJ/m2 3.5.6.2 At -40 +/- 1 C 1.4 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A4 Prin
12、ted copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 68 C 3.5.7.2 At 0.45 MPa 120 C 3.5.8 Heat Aging Performance (ISO 188, except
13、150 +/- 50 air changes/h, 2000 h at 150 +/- 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 +/- 25% (Test Method per para 3.5.3) 3.5.8.2 Impact Strength, Izod Change, max -25% (Test Method per para 3.5.6.1,
14、 specimens to be notched before heat aging) 3.5.8.3 Appearance Evaluation: No crazing or dulling permitted. 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate) Fog Number, min 80 Formation of a clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO 3795) Burn Ra
15、te, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A4 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 4 of 5 5. GENERAL INFORMATION The informatio
16、n given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 4 - 10-5/ C (ASTM E 831 (TMA), temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded s
17、pecimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 0.5 - 0.9% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1 - 0.3% . After 30 min at 120 C 0.1 - 0.5% 5.3 RECYCLING CODE (SAE J1344) PP-(TD+TI02)42 5.4 TENSILE MODULUS _ MPa (ISO 527) (report data) ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A4 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 5 of 5
