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 2006 01 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1990 07 11 Released DE00E00107002060 J.B. Huebner Printed copies
2、are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 4 POLYCARBONATE (PC), 12.5% TiO2 FILLED WSF-M4D757-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a titanium dioxide (TiO2) filled polycarbonate molding compound. 2. APPL
3、ICATION This specification was released originally for material used for back cans in instrument clusters where opacity is necessary. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Produc
4、tion Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 17 - 32 g/10 minutes (ISO 1133/ASTM D 1238, 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. 3.4.2 TiO2 Content 10.5 - 14.5% (ISO 3451/1, Meth
5、od A, 1 h at 650 +/- 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 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
6、 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 to ISO 294. No annealing allowed. 3.5.2 Density 1.27 - 1.33 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPEC
7、IFICATIONWSF-M4D757-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 4 3.5.3 Tensile Strength at Yield, min 55 MPa (ISO R 527/ASTM D 638M, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 5 mm/min test speed) 3.5.4 Flexural Modulus, min 1.7 GPa (ISO 178/ASTM D 790M, M
8、ethod I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Shear Modulus at 23 C 700 - 1160 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. Specim
9、en length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum). Additionally, a Shear Modulus vs. 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 4. 3.5.6
10、Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.6.1 At 23 +/- 2 C 25 kJ/m23.5.6.2 At -40 +/- 2 C 8.7 kJ/m23.5.6.3 At -20 +/- 2 C 8.7 kJ/m2The test specimens must be conditioned for minimum of 6 h at the above sp
11、ecified 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. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 118 C 3.5.7.2 At 0.4
12、5 MPa 120 C All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. 3.5.8 Vicat Softening Temperature, min 145 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. raise 50 +/-
13、5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 49.0 N load). All specimens dry as molded. If not tested immediately after molding, specimens must be stored in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATIONWSF-M4D757-A Printed copies are u
14、ncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 4 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 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 at Yield Chang
15、e +/- 25% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +/- 25% (Test 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 The specimen size required for material approval is 355 x 100 x 1.5 +/- 0.1 mm with a
16、 smooth surface. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 60 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 specification. 5.1 COE
17、FFICIENT OF LINEAR THERMAL EXPANSION 6.5-5/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 0.6% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.8% After 30 min at 120 C 0.8% 5.3 ELONGATION AT YIELD 8% (Test Method according to para 3.5.3) ENGINEERING MATERIAL SPECIFICATIONWSF-M4D757-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 4 of 4
