1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 09 10 N-STATUS Replaced by WSS-M4D1051-A1, WSS-M4D1052-A2, WSS-M4D1053-A1 WSS-M4D1053-A2 L. Soreide, NA 2005 09 13 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1989 02 09 Released CSS1-RD349511 L.A. Graham G.S.M Printed copie
2、s are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYCARBONATE (PC) MOLDING COMPOUND WSB-M4D627-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high melt flow polycarbonate molding compound. 2. APPLICATION This specification was re
3、leased originally for material used for speaker grilles within a door trim panel, which must be cloth covered or painted. NOTE: This material must not come in contact with hydrocarbon based chemicals, which may cause stress cracking leading to the failure of the part. 3. REQUIREMENTS 3.0 STANDARD RE
4、QUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard 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 MOLDI
5、NG COMPOUND (s) 3.4.1 Melt Flow Rate 16 - 24 g/10 minutes (ISO 1133, 300 C, 1.2 kg) The material shall be dried for min of 4 h minimum at 120 - 130 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparation of Test Specimens Unless otherwise specifie
6、d 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. 3.5.2 Density 1.18 - 1.22 g/cm (ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D627-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.3 Tensile Stren
8、gth at Yield, min 50 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.3.1 Elongation at Break, min 60% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 1.7 GPa (ISO 178, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm suppor
9、t span) 3.5.5 Shear Modulus at 23 C 650 - 980 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. Additionally, a Shear Modulus versus Temperature curve shall be plotted for
10、-50 to +150 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. (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 40 kJ/m 3.5.6.2 At -40 +/- 1 C 21 kJ/m 3
11、.5.6.3 At -40 +/- 2 C 13 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, if not possible, test can be conducted outside, but within 5 s. (s) 3.5.7 Heat Deflection Temper
12、ature, 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 119 C 3.5.7.2 At 0.45 MPa 131 C ENGINEERING MATERIAL SPECIFICATIONWSB-M4D627-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.8 Vicat
13、Softening Temperature, min (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temperature raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of weight. 3.5.8.1 At 9.8 N 141 C 3.5.8.2 At 50.0 N, min 136 C 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 100
14、0 h at 80 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength Change +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Elongation at Break Change +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 25% (T
15、est 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 Self Extinguishing (SE) The specimen size required for material approval is 355 x 100 x 1.5 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The information given
16、below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 6.5-5/ C (ASTM E 831 (TMA), temperature range - - - C) 5.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 M
17、olding Shrinkage . After 48 h at 23 +/- 2 C 0.5 - 0.7% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D627-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.7 - 0.8% . After 30
18、min at 120 C 0.03 - 0.05% 5.3 FOGGING (FLTM BO 116-03, 3 h at 100 C heating, 21 C cooling plate) Fog Number, min 60 Formation of a clear film, droplets or crystals is cause for rejection. 5.4 INSTRUMENTED IMPACT TEST (ASTM D 3763, Dynatup 3.1 mm thickness x 101.6 mm diameter, 12.7 mm tup) At -29 +/- 1 C 40 J 5.5 RECYCLING CODE ENGINEERING MATERIAL SPECIFICATIONWSB-M4D627-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
