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 07 18 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 1994 01 25 Released NB00I10043054419 J.M. LaDuke Printed copies
2、are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 5 POLYCARBONATE (PC), POST CONSUMER RECYCLATE WSB-M4D926-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic molding compound based on polycarbonate containing
3、 a minimum of 25% post consumer recycled polycarbonate. 2. APPLICATION This specification was released originally for material used for headlamp body. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requir
4、ements 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) Melt Flow Rate 11.0 - 23.0 g/10 minutes (ISO 1133, 300 C, 1.2 kg) The material shall be dried for 2 h
5、minimum at 120 - 125 C in a mechanical convection oven immediately preceding the test. 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. 15
6、0 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 to ISO 294. No annealing allowed. 3.5.2 Density 1.17 - 1.20 g/cm (ISO 118
7、3, Method A) ENGINEERING MATERIAL SPECIFICATIONWSB-M4D926-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 5 (s) 3.5.3 Tensile Strength at Max Load, min 52 MPa (ISO R 527, 150 minimum x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) (s) 3.5.4 Flexural Mod
8、ulus, min 1.6 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 680 - 1030 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 c
9、enter 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 curve shall be plotted for -50 to +170 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance
10、range shown on page 5. (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) (s) 3.5.6.1 At 23 +/- 2 C 29.0 kJ/m (s) 3.5.6.2 At -40 +/- 2 C 8.0 kJ/m The test specimens must be conditioned for minimum of 6 h at the above specified temperature
11、 prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.7 Heat Deflection Temperature, min 112 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflection. At 1.80 MPa) All specimens dry as molded. If not tested immediately after molding, sp
12、ecimens must be stored in a sealed, moisture-proof container filled with silica gel. (s) 3.5.8 Vicat Softening Temperature, min 134 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 5 kg weight. At 50.0 N load)
13、 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 SPECIFICATIONWSB-M4D926-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 5 3.5.9
14、Heat Aging Performance (ISO 188, except 150 +/- 50 air changes/h, 1000 h at 95 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Max +/- 25% Load Change (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change +
15、/- 25% (Test Method per para 3.5.6.1, specimens to be notched before heat aging) 3.6 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.6 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (FLTM BO 116-03, 3 h at 100 C) Fog Numb
16、er, min 90 Formation of clear film, droplets or crystals 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 COEFFICIENT OF LINEAR THERMAL EXPANSION (ASTM E 831 TMA, temperature
17、 range -30 to +30 C) . Flow Direction 4.4-5/ C . Transverse to Flow 4.3-5/ 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 0.99% ENGINEERING MATERIAL SPECIFICATIONWSB-M4D926-APrinted copies are uncontrol
18、led 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 1.13% . After 30 min at 120 C 1.03% 5.3 HEAT DEFLECTION TEMPERATURE 130 C (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, edgewise, 0.32 +/- 0.01 mm deflec
19、tion, at 0.45 MPa) 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. 5.4 MELT VOLUME RATE 11 - 22 cm/10 minutes (ISO 1133, 300 C, 1.2 kg) The material shall be dried for 2 h minimum at 120 - 125 C in a mechanical convection oven immediately preceding the test. 5.5 RECYCLING CODE PC ENGINEERING MATERIAL SPECIFICATIONWSB-M4D926-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 5 of 5
