1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2005 11 15 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.8, 3.9 & 4 2000 11 08 Revised Updated A. Cockman 1989 11 17 Released SM/EQ9859 P. Kuntze Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 1 of 5 ACRYLO
2、NITRILE STYRENE ACRYLATE/POLYCARBONATE WSK-M4D682-A2 BLEND (ASA+PC), MEDIUM HEAT RESISTANT MEDIUM IMPACT STRENGTH 1. SCOPE The material defined by this specification is a medium impact strength, medium heat resistant blend molding compound based on acrylonitrile styrene acrylate and polycarbonate. 2
3、. APPLICATION This specification was released originally for material used for painted and non-visible body parts. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part
4、 producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 9-15 g/10 minutes (ISO 1133/ASTM D 1238, 260 C, 5 kg) The material shall be dried for 2 h minimum at 105 - 110 C in a mechanical convection oven immediat
5、ely 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. 150 min x 10 x 4.0 +/- 0.2 mm (Tensile Bar, ISO 3167) B. 120 x 10
6、 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 1.13-1.18 g/cm3(ISO 1183, Method A/ASTM D 792, Method A1) ENGINEERING MATERIAL SPECIFICA
7、TIONWSK-M4D682-A2 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 2 of 5 3.5.3 Tensile Strength at Max Load, min 51 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/-0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 75% (Test Method according to p
8、ara 3.5.3) 3.5.4 Flexural Modulus, min 2.0 GPa (ISO 178/ASTM D 790M, Method 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 750 - 1040 MPa (ASTM D 4065, forced constant amplitude, fixed frequency of 1 Hz +/- 15%, strain level below 1%. Specimen appr
9、ox. 60 x 10 x 4.0 +/- 0.2 mm cut from the center of specimen A. Specimen 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 +120 C temperature range, at 5 C minimum intervals. The
10、 plotted curve must be within tolerance range shown on page 5. 3.5.6 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 48 kJ/m23.5.6.2 At -10 +/- 2 C 20 kJ/m23.5.6.3 At -40 +/- 2 C 10 kJ/m2The tes
11、t 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. 3.5.7 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 120 x 10 x
12、 4.0 +/- 0.2 mm specimen) 3.5.7.1 At 1.82 MPa 90 C 3.5.8 Vicat Softening Temperature, min (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath silicone oil, temp. raise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight.) All specimens dry as molded. If not tested immediately after moldi
13、ng, specimens must be stored in a sealed, moisture-proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D682-A2 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 3 of 5 3.5.8.1 At 49.0 N 116 C 3.5.9 Heat Aging Performance (ISO 188/ASTM D 57
14、3, 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.5.9.1 Tensile Strength at Max Load Change, max +20% (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max -50% (Test Method per para 3.5
15、.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 1.0 +/- 0.1 mm with a smooth surface. 3.7 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h
16、 and 16 h) Fog Number, min 60 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 7 - 9-5/
17、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 0.4 - 0.85% 5.2.2 Post Shrinkage (Separate specimens required for each test) After 48 h at 80 C 0.25% After 30 min at 120 C 0.35% ENGINEERING MA
18、TERIAL SPECIFICATIONWSK-M4D682-A2 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 4 of 5 5.3 MELT VOLUME RATE 9 - 15 cm3/ (ISO 1133/ASTM D 1238, 220 C, 10 kg) 10 minutes The material shall be dried for min of 2 h at 105-110 C in a mechanical convection oven immedia
19、tely preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen) 5.4.1 At 0.45 MPa 118 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. ENGINEERING MATERIAL SPECIFICATIONWSK-M4D682-A2 Printed copies are uncontrolled Copyright 2005, Ford Global Technologies, LLC Page 5 of 5
