1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Ver. 2 2008 08 08 N-STATUS Replaced by WSS-M4D827-A3 C. Boese, FNA 1990 07 24 SBP53436 Released R. Balodis Printed copies are uncontrolled Copyright 2008, Ford Global Technologies, LLC Page 1 of 4 ABS, HIGH IMPACT MOLDING COMPOUND, PAINTABLE
2、WSZ-M4D778-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high impact resistant thermoplastic molding compound based on acrylonitrile butadiene styrene (ABS) that requiers painting for protection to UV exposure. 2. APPLICATION This specification was released
3、 originally for material used for painted exterior trim parts. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the requirements of Ford Quality System Standard Q-101. A mutually acceptable Control Plan as described therein is required for material/source approval. Appropriate stati
4、stical tools must be used to analyze process/product data so that variation in the final product is continuously reduced. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specific
5、ation. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same co
6、nditions. 3.3 CONDITIONING AND TEST CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.4 MOU
7、LDING COMPOUND 3.4.1 Melt Flow Rate tbd g/10 minutes (ISO 1133/ASTM D 1238, 220 C, 10 kg) The material shall be dried for min of 2 h at 80 - 85 C in a mechanical convection oven immediately preceding the test. ENGINEERING MATERIAL SPECIFICATION WP 3948-bPage 2 of 4 3.5 MOULDED TEST SPECIMEN 3.5.1 Pr
8、eparation 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 x 4.0 +/- 0.2 mm Specimens with shorter dimensions shall
9、 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 1.00 - 1.08 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 36 MPa (ISO R 527/ASTM D 638, 150 min x 10 x
10、 4.0 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min tbd % (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.0 GPa (ISO 178/ASTM D 790, 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 tbd MPa/GPa
11、(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 centre of specimen A. Specimen length between clamps 35-40 mm. Soak time at each temperature interval - 3 minutes minimum) Additionally, a Shear M
12、odulus vs. Temperature curve shall be plotted for - 50 to + 160 C temperature range, at 5 C minimum intervals. The plotted curve must be within tolerance range shown on page 6. 3.5.6 Impact Strength, Izod, min (ISO 180, Method A/ASTM D 256, Method A, 80 x 10 x 4.0 +/- 0.2 mm specimen, 10 specimens f
13、or each test) 3.5.6.1 At 23 +/- 2 C 40 kJ/m2 3.5.6.2 At - 40 +/- 2 C tbd kJ/m2 ENGINEERING MATERIAL SPECIFICATION WP 3948-bPage 3 of 4 The 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 c
14、old box, if not possible, test can be conducted outside, but within 5 s. 3.5.7 Heat Deflection Temperature, min 75 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 1.82 MPa) 3.5.8 Vicat Softening Temperature, min 95 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm specimens. Bath - silicone oil, tem
15、p. raise 50 +/- 5 C/h. Dial gauge 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. 3.5.9 Heat Aging Performance (ISO 188/ASTM D 573, 1
16、50 +/- 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 Change, max + 25 % (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max - 25 % (Test Method per para 3.5.6.1, specime
17、ns 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 tbd +/- 0.1 mm with a smooth surface. 3.7 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specifi
18、ed on the Engineering drawing, Engineering parts specification and/or performance specifications. All critical areas with respect to these properties shall be clearly designated on the Engineering drawing. 3.8 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent i
19、n all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this specification, whether or not such changes affect the materials abil
20、ity to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. Test data, test samples and a new code identification are to be
21、submitted with the request. ENGINEERING MATERIAL SPECIFICATION WP 3948-bPage 4 of 4 Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Material Specification WSS-M99P9999-A1, unless a different su
22、ffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expres
23、sion of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity its own laboratory report to the specification (test results, not nominal values), the material designation and code number
24、, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List. 5. GENERAL INFORMATION The information given below is provided for assistance and clarification and does not represent (requirement(s) to this specification. 5.1 COEF
25、FICIENT OF LINEAR THERMAL EXPANSION tbd E-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 tbd % 5.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 C tbd % . After 30 minutes at 120 C tbd % 5.3 HEAT DEFLECTION TEMPERATURE, min tbd C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. At 0.45 MPa) Shear Modulus vs. Temperature Plot - tbd
