1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 06 12 Activate M. Masserant Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 5 ACRYLONITRILE STYRENE ACRYLATE + POLYCARBONATE WSS-M4D682-A6 BLEND (ASA+PC), HIGH HEAT RESISTANT MOLDING COMPOUND, INTER
2、IOR, METALLIC EFFECT 1. SCOPE The material defined by this specification is a molding compound based on acrylonitrile-styrene-acrylate and polycarbonate. 2. APPLICATION This specification was released originally for material used for unpainted molded in color, below the beltline, interior metallic a
3、pplications such as shifter knobs and other various interior trim. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard
4、 Requirements 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 using latest ISO test methods. This specification is based on virgin material only. The use of in-house regrind is not a
5、llowed unless approved by Materials Engineering. If approved, the part must then be validated during PV testing with the documented level of regrind noted on the part drawing. 3.2 MOLDING COMPOUND 3.2.1 Melt Flow Rate, g/10 minutes 12.0 - 30.0 (ISO 1133, 265 C, 5.0 kg) The material shall be dried fo
6、r 4 h minimum at 110 - 115 C in a mechanical convection oven immediately preceding the test. 3.3 MOLDED TEST SPECIMEN 3.3.1 Preparation of Test Specimens Unless otherwise specified all tests shall be carried out on injection molded one-end gated test specimens. ENGINEERING MATERIAL SPECIFICATIONWSS-
7、M4D682-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 5 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 dimensions shall be cut from the center portion of t
8、he test specimen A and/or B. The specimens shall be prepared according to ISO 294. No annealing allowed. 3.3.2 Density, g/cm3range 1.15 - 1.17 (ISO 1183, Method A) 3.3.3 Tensile Strength at Yield, min 52 MPa (ISO R 527, 150 min x 10 x 4.0 +/- 0.2 mm specimen, 50 mm/minute test speed 3.3.3.1 Elongati
9、on at Break, min 23% (Test Method according to para 3.3.3) 3.3.4 Flexural Modulus, min 2300 MPa (ISO 178, Method I, Procedure A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 2 mm/min test speed, 64 mm support span, the radius of the loading nose 5.0 +/- 0.1 mm and of the supports 2.0 +/- 0.2 mm) 3.3.5 Charpy,
10、 notched, min (ISO 179/1eA, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A, 10 specimens 3.3.5.1 At 23 +/- 2 C, 7.0 kJ/m23.3.5.2 At -40 +/- 2 C 3.8 kJ/m23.3.5.3 At 0 +/- 2 C 6.0 kJ/m2The test specimen must be conditioned for minimum of 6 hours at the above specified temperature p
11、rior to impact test. Low temperature testing shall be done within the cold chamber, if not possible, test may be conducted outside, but within 5 seconds. 3.3.6 Impact Strength, Izod, notched (Initial Qualification), min (ISO 180/1A, 80 x 10 x 4.0 +/- 0.2 mm specimen use center section of specimen A,
12、 10 specimens for each test) 3.3.6.1 At 23 +/- 2 C, 7.0 kJ/m23.3.6.2 At -40 +/- 2 C, 3.8 kJ/m2The test 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 con
13、ducted outside, but within 5 s. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D682-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 5 3.3.7 Heat Deflection Temperature, min 83 C (ISO 75, 120 x 10 x 4.0 +/-0.2 mm specimen, flatwise at standard deflection of 0.32 +/
14、- 0.01 mm. At 1.80 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. 3.3.8 Vicat Softening Temperature, min 100 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, temp. r
15、aise 50 +/- 5 C/h. Dial gage reset to 0 after addition of 5 kg weight. At 50.0 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. 3.3.9 Heat Aging Performance (ISO 188, 150 +/- 50 air ch
16、anges/h, 1000 h at 80 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination) 3.3.9.1 Tensile Strength at +/- 25% Change (Test Method per para 3.3.3) 3.3.9.2 Impact Strength, +/- 25% Izod Change (Test Method per para 3.3.6 specimens to be notched before
17、heat aging) 3.3.10 Hydrolytic Stability (ISO 188, humidity aging at 90 C/70% RH for 500 h. After humidity aging test specimens are to be conditioned for 24 h at 23 +/- 2 C 50% RH. Unaged property values shall be determined at the time of the aged properties determination) 3.3.10.1 Impact Strength, I
18、zod Change +/- 50% (Test Method per para 3.3.5, specimens to be notched before humidity aging) 3.4 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surface. ENGINEERING MATERIAL SPECIFICATIONWSS-M4D682-A
19、6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 5 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.6 WEATHERING R
20、ESISTANCE After exposure in accordance with 3.6.1 and 3.6.2, the material shall show no fading or color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or chalk
21、ing will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume), or equivalent, after the Florida exposure. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final
22、 approval. 3.6.1 Exposure of Interior Trim Materials in a controlled irradiance water cooled apparatus, min (FLTM BO 116-01, 1203.2 KJ/m2) Rating 4 3.6.2 12 months Florida, min Rating 4 (FLTM B0 116-01, 5 south, under PPG Herculite K, tempered safety glass, 3 mm thick. Specimen size: 60 x 60 minimum
23、, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION, range, -5/C (ASTM D 696), from
24、-30 C to + 30 C Parallel 6.98 Perpendicular 8.21 4.2 MOLD SHRINKAGE (ISO 2577, approx. 150 x 100 x 3.2 +/- 0.2 mm injection molded specimen) 4.2.1 Molding Shrinkage . After 48 h at 23 +/- 2 C, 0.65 0.86% 4.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C, 0.09% ENG
25、INEERING MATERIAL SPECIFICATIONWSS-M4D682-A6 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 5 of 5 4.3 TENSILE STRESS/STRAIN CURVES (ISO 527-1, 527-2, ISO 11403-1; 150 x 1 x 4 mm specimen specimen A) Test speed shall be 5 mm/minute for all materials. Provide a curve of tensile stress versus strain using one specimen per lot at each of the following temperatures: -30 C, 23 C and 90 C (high temp is dependent on material type). For ductile materials, the curve shall cover strain through yield point. 4.4 RECYCLING CODE ASA+PC or ASA+PC
