1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 03 2011 06 23 N Status Replaced by WSS-M4D585-C1 A. Pan, APA 2010 08 13 Revised Revised the temperature in 3.5.7 M. Souza, SA 1997 10 13 Activated M. Masserant Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC
2、Page 1 of 3 ABS/POLYCARBONATE BLEND (ABS + PC), WSS-M4D585-B IMPACT MODIFIED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an impact modified acrylonitrile-butadiene-styrene/polycarbonate blend (ABS + PC) molding compound. 2. APPLICATION This specification was
3、released originally for material used for instrument panel substrates. 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
4、 specification, identified by symbol (s), shall be met with data representing 3 sigma values. 3.4 MOLDING COMPOUND (s) 3.4.1 Melt Flow Rate 5.0 - 17.5 g/ (ISO 1133, 260 C, 3.7 kg) 10 minutes (s) 3.4.2 Melt Viscosity 88 - 270 Pa.s (ASTM D 3835, stock temperature -275 C, ram pressure -0.57 MPa, prehea
5、t 6 minutes, capillary dimension -25:1 ratio) 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,
6、 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 1.11 - 1.15 g/cm3 (ISO 1183, Method A) ENGINEERING MATERIAL SPECIF
7、ICATION WSS-M4D585-B Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 2 of 3 (s) 3.5.3 Tensile Strength at Max Load, min 48 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed) 3.5.3.1 Elongation at Yield, min 3.9% (Test Method according
8、to para 3.5.4) (s) 3.5.4 Flexural Modulus, min 2.1 GPa (ISO 178, 150 x 10 x 4.0 +/- 0.2 mm specimen, 1.7 mm/minute test speed, 64 mm support span) (s) 3.5.5 Impact Strength, Izod, min (ISO 180, Method A, 63.5 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.5.1 At 23 +/- 2 C 43.1 kJ/m
9、2 3.5.5.2 At -29 +/- 2 C 25.0 kJ/m2 The test specimens must be conditioned for min of 6 h at the above specified temperature prior to impact test. Low temperature testing shall be done within the cold box. (s) 3.5.6 Heat Deflection Temperature, min (ISO 75, 120 x 10 x 4.0 +/- 0.2 mm specimen, 0.32 +
10、/- 0.01 mm deflection) 3.5.6.1 At 1.80 MPa 104 C 3.5.6.2 At 0.45 MPa 129 C 3.5.7 Vicat Softening Temperature, min 122 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens use center section of specimen A. Bath - silicone oil, temperature raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weig
11、ht. At 50 N load) 3.5.8 Heat Aging Performance (ISO 188, 1000 h at 85 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.8.1 Tensile Strength at Max Load +/- 15% Change, max (Test Method per para 3.5.3) 3.5.8.2 Elongation at Yield Change, max +/
12、- 15% (Test Method per para 3.5.3) ENGINEERING MATERIAL SPECIFICATION WSS-M4D585-B Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 3 of 3 3.5.8.3 Impact Strength, Izod Change, -20% max (Test Method per para 3.5.5.1, specimens to be notched before heat aging) 3.5.9
13、Instrumented Impact Strength, min (ISO 6603-2, 3.2 mm +/- 0.2 mm thick x 100 +/- 2 mm diameter specimen, 6.6 m/s impact velocity, 12.7 mm dart, 40 mm support opening) 3.5.9.1 At 23 +/- 2 C 34 J 3.5.9.2 At - 29 +/- 1 C 38 J 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test c
14、onditioning 1 h) Fog Number, min 80 Formation 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 1.0 +/- 0.1 mm with a smooth surface. 5. GENERAL INFORMATION The informat
15、ion given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.4 -5/ C (ISO 11359-2 (TMA), temperature range -30 to +30 C) 5.2 MOLD SHRINKAGE (ISO 2577, approximately 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 5.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C 0.55 - 0.75% 5.3 Elongation at Break, min 45% (Test Method according to para 3.5.3) 5.4 RECYCLING CODE PC+ABS
