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, 3.8, 3.9 & 4 1995 04 24 Activated S. DeGrood Printed copies are uncontrolled
2、Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYCARBONATE (PC) MOLDING COMPOUND WSS-M4D627-A2 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polycarbonate. 2. APPLICATION This specification was released ori
3、ginally for material used for interior bezel. 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). 3.1.1 All requirements of this specification, identifie
4、d by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 65 - 77 g/10 minutes (ISO 1133, 300 C, 1.2 kg) The material shall be dried for 4 h minimum at 120 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECI
5、MEN 3.5.1 Preparation of Test Specimens Unless otherwise specified 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 dime
6、nsions 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 1.170 - 1.192 g/cm3(ISO 1183, Method A) ENGINEERING MATERIAL SPECIFICATIONWSS-M4D627-A2 Printed copies are uncontrolled Copyright 201
7、0, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.3 Tensile Strength at Yield, min 58 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 39% (Test Method according to para 3.5.3) (s) 3.5.4 Flexural Modulus, min 2.15 GPa (ISO 178,
8、 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 650 - 750 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. Specime
9、n length between clamps 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 +120 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.6
10、 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 2.5 kJ/m23.5.6.2 At -40 +/- 1 C 2.8 kJ/m23.5.6.3 At -20 C +/- 2 C 2.5 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior
11、to impact test. Low temperature testing shall be done within the cold box. Note: The data for Izod Impact Strength per ISO 180/1A shows poor precision because the dimension of the required ISO specimens exceeds the critical thickness of the material. More consistent data and more representative valu
12、es for the performance of the material are obtained with 2.5 mm thick specimens, - see para 5.3. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D627-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 (s) 3.5.7 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.
13、0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection) 3.5.7.1 At 1.80 MPa 108 C 3.5.7.2 At 0.45 MPa 125 C (s) 3.5.8 Vicat Softening Temperature, min 135 C (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
14、 5 kg weight. At 50 N load) 3.5.9 Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 85 +/- 2 C. After heat aging test specimens are to be conditioned in a desiccator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged properties det
15、ermination) 3.5.9.1 Tensile Strength at Break Change +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 55% (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 F
16、ormation of clear film, droplets or crystals 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 3.2 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D627-A2 Printed copies are uncon
17、trolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 5 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 6.37-5/ C (ASTM E 831 (TMA), temperature ra
18、nge -40 to 90 C) 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 0.51 - 0.57% 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C 0.19 - 0.30% . After 30 min at 120 C 0.26 - 0.87% 5.3 IMPACT STRENGTH, IZOD, average value 41 kJ/m2(ISO 180/1A, 80 X 10 X 2.5 +/- 0.2 mm specimen) 5.4 RECYCLING CODE PC ENGINEERING MATERIAL SPECIFICATIONWSS-M4D627-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
