1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2011 03 01 N-Status No replacement named A Pan, APA 2005 10 11 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1995 02 01 Released EP00E10460360001 L. Rodigas Printed copies are uncontrolled Copyright 2011, Ford Global Technologies,
2、 LLC Page 1 of 5 POLYPROPYLENE (PP) HOMOPOLYMER, 40% MINERAL MIX WSK-M4D644-A2 FILLED 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 and
3、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 Production
4、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 8 - 18 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.4.2 Filler Content 35 - 48% (ISO 3451/1, Method A,
5、 ash: talc/titanium dioxide (TiO2), 1 h at 950 +/- 50 C, test portion 1 to 2 g) Note: 40% ash talc/TiO2 corresponds approximately to 32% talc and 8% titanium dioxide. 46% ash talc/Ti02 corresponds to 40% talc and 6% titanium dioxide. Calculated percentages of Ti02 may be dependant on the content of
6、volatile matter in the compound. 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A2 Printed copies are uncontrolled Copyright 2011, F
7、ord Global Technologies, LLC Page 2 of 5 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 shall be cut from the center portion of the test specimen A and/or B. The specimens shall be prepare
8、d according to ISO 294. No annealing allowed. 3.5.2 Density 1.20 - 1.36 g/cm3 (ISO 1183, Method A) (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 m
9、m specimen, 2 mm/min test speed, 64 mm support span) 3.5.5 Shear Modulus at 23 C 1.64 - 2.73 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 clamp
10、s 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 +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,
11、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 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 d
12、one within the cold box. ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A2 Printed 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
13、 68 C 3.5.7.2 At 0.45 MPa 120 C 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 at Max Load Change +/- 25% (Test Method per para 3.5.3)
14、 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 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plate) Fog Number, min 90 Formation of a clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY
15、 (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 surface. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFI
16、CIENT OF LINEAR THERMAL EXPANSION 4 - 10-5/ C (ASTM E 831 (TMA), temperature range -30 to +30 C) ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A2 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 4 of 5 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm
17、 injection molded specimen) 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 PP-(TD32+TI02D08) ENGINEERING MATERIAL SPECIFICATION WSK-M4D644-A2 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 5 of 5
