1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 01 19 N-STATUS No replacement named J. Crist, NA 2006 04 11 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1993 03 19 Released NGA1E10269419002 C.C. Gray Printed copies are uncontrolled Copyright 2010, Ford Global Technologies,
2、 LLC Page 1 of 4 POLYPROPYLENE (PP) HOMOPOLYMER, 10% WSH-M4D832-A WOLLASTONITE FILLED MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a wollastonite filled molding compound based on polypropylene homopolymer. 2. APPLICATION This specification was
3、 released originally for material used for blower wheels. 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-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 4
4、 - 6 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) 3.4.2 Filler Content 10 - 12% (ISO 3451/1, Method A, wollastonite filler, 30 minutes at 550 +/- 50 C) 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded on
5、e-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 A and/or B. The specimens shall be prepared according t
6、o ISO 294. No annealing allowed. 3.5.2 Density 0.96 - 1.00 g/cm (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 30 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) ENGINEERING MATERIAL SPECIFICATIONWSH-M4D832-A Printed copies
7、 are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.4 Flexural Modulus, min 1.8 GPa (ISO 178/ASTM D 790M, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2
8、.0 +/- 0.2 mm) 3.5.5 Shear Modulus at 23 C 800 - 1335 MPa (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 temperatu
9、re interval - 3 minutes minimum). Additionally, a Shear Modulus vs. 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 page 4. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Meth
10、od A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 3.6 kJ/m 3.5.6.2 At -40 +/- 2 C 2.2 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
11、 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, at standard deflection of 0.32 +/- 0.01 mm) 3.5.7.1 At 1.80 MPa 56 C 3.5.7.2 At 0.45 MPa 107 C 3.5.8 Heat Aging Performance (ISO 188/AS
12、TM D 573, 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 +/- 15% (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, s
13、pecimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATIONWSH-M4D832-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x
14、1.5 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 70 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 s
15、pecification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 8 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 1.3 - 1.5% 5.3 ELONGATION AT BREAK 15% (Test Method according to para 3.5.3) 5.4 HARDNESS, DUROMETER D 70 (ISO 868/ASTM D 2240, 15 s dwell) 5.5 RECYCLING CODE PP-M10 Note: M = Wollastonite ENGINEERING MATERIAL SPECIFICATIONWSH-M4D832-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
