1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2011 03 17 N Status No Replacement Named A. Pan, APA 2006 05 16 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1993 07 01 Released EP00E10258822000 L. Rodigas Printed copies are uncontrolled Copyright 2011, Ford Global Techn
2、ologies, LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 20% MINERAL/GLASS WSK-M4D855-A2 FIBER FILLED/REINFORCED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a 20% filled/reinforced, with mixture of 15% chalk and 5% glass fiber, injection mold
3、ing compound based on polypropylene homopolymer. 2. APPLICATION This specification was released originally for material used for big dimension heater blower wheels. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys S
4、tandard Requirements For Production 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 1 - 4 g/10 minutes (ISO 1133, 230 C, 2.16 kg) (s) 3.4.2 Ash Content
5、 11 - 16% (ISO 3451/1, Method A, ash: Calcium Oxide CaO/glass fiber, 1 h at 900 +/- 50 C, test portion 1 to 2 g) Note: 13.5% ash CaO/glass fiber corresponds approximately to 14.5 chalk (CaCO3) and 6.5% glass fiber. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specifi
6、ed 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 shall be cut from the center portion of the test specimen
7、 A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. ENGINEERING MATERIAL SPECIFICATION WSK-M4D855-A2 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 2 of 4 3.5.2 Density 1.03 - 1.06 g/cm (ISO 1183, Method A) (s) 3.5.3 Tensile St
8、rength at Max Load, min 28 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 2.1 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 C 540 - 900 MPa (ASTM D 4065, forced con
9、stant 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 versus Temperature
10、 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. (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 3.0 kJ/m 3.5
11、6.2 At -40 +/- 1 C 2.0 kJ/m 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. (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.34 +/-
12、0.01 mm deflection) 3.5.7.1 At 1.80 MPa 70 C 3.5.7.2 At 0.45 MPa 132 C 3.5.8 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) ENGINEERING MATERIAL SPECIFICATION WSK-M4
13、D855-A2 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 3 of 4 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 -15% (Test Method per para 3.5.6.1, specimens to be notched before heat aging)
14、3.6 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Number, min 90 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.7 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 surface
15、 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 5 15-5/ C (ASTM E 228 or TMA, temperature range 20 - 100 C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100
16、 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage After 48 h at 23 +/- 2 C 1.4% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.1 - 0.5% . After 30 min at 120 C 0.0 - 0.5% 5.3 RECYCLING CODE PP-(K+GF)20 ENGINEERING MATERIAL SPECIFICATION WSK-M4D855-A2 Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 4 of 4
