1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2009 08 11 N-STATUS Replaced by WSB-M4D690-A A. Pan, AP1989 11 17 Released SM/EQ9859 TP P. Kuntze WP 3948-a Page 1 of 6 ABS MOLDING COMPOUND, HIGH HEAT RESISTANT HIGH WSK-M4D709-A IMPACT AND HIGH TENSILE STREN
2、GTH NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high impact strength, high flexural modulus, high tensile strength and high heat resistant molding compound based on acrylonitrile butadiene styrene. 2. APPLICATION This specification was released originally f
3、or material used for non-visible 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 statistical tools must be us
4、ed 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 specification. The IR spectra a
5、nd thermogram 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 conditions. 3.3 CONDITIONI
6、NG 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 specivied. ENGINEERING MATERIAL SPECIFICAT
7、ION WSK-M4D709-A WP 3948-b Page 2 of 6 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 3.5 - 10 g/ (ISO 1133/ASTM D 1238 200 C, 10 kg) 10 minutes The material shall be dried for min of 2 h at 80 - 85 C in a mechanical convection oven immediately preceding the test. 3.5 MOLDED TEST SPECIMEN 3.5.1 Preparati
8、on 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 be cut
9、 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 1.04 - 1.08 g/cm3 (ISO 1183, Method A/ASTM D 792, Method A1) 3.5.3 Tensile Strength at Max Load, min 45 MPa (ISO R 527/ASTM D 638M, 150 x 10 x 4.0 +/- 0
10、.2 mm specimen, 50 mm/minute) 3.5.3.1 Elongation at tbe, min tbe % (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.45 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 760 - 1140 MPa (ASTM D 4065,
11、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 center of specimen A. Specimen length between clamps 35 - 40 mm soak time at each temperature interval: 3 minutes minimum) ENGINEERING MATERIAL SPECIFICATION WS
12、K-M4D709-A WP 3948-b Page 3 of 6 Additionally, a Shear Modulus vs. Temperature curve shall be plotted for - 50 to + 120 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, Met
13、hod 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 20 kJ/m2 3.5.6.2 At 0 +/- 2 C 11 kJ/m2 3.5.6.3 At - 40 +/- 2 C 6.5 kJ/m2 The test specimens must be conditioned for minimum of 6 h at the above specified temperature prior to impact test. Low temperature te
14、sting 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 80 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 102 C (ISO 306, 10 x 10 x 4.0 +/- 0.2 mm sp
15、ecimens. Bath - silicone oil, temp. raise 50 +/- 5 C/h. Dial gage 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 Pe
16、rformance (ISO 188/ASTM D 573, 150 +/- 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 at Max Load +/- 15 % Change (Test Method per para 3.5.3) 3.5.9.2 Impact Strength, Izod Change, max - 35
17、 % (Test Method per para 3.5.6.1, specimens to be notched before heat aging) ENGINEERING MATERIAL SPECIFICATION WSK-M4D709-A WP 3948-b Page 4 of 6 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 1.9 +/- 0.1 mm with a smooth sur
18、face. 3.7 FOGGING (FLTM BO 116-03) Fog Number, min 60 Formation of excessive amounts of clear film or droplets is cause for rejection. 3.8 ADDITIONAL REQUIREMENTS Specific requirements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specificati
19、on and/or performance specifications. All critical areas with respect to these properties shall be clearly designated on the Engineering drawing. 3.9 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval wa
20、s originally granted. Prior to making any change in the properties, composition, construction, color, processing or labelling of the material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier sh
21、all 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 submitted with the request. Substance restrictions imposed
22、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 suffix (e.g., A2 or A3) is specified on the engineering document for the application. 4. APPROVAL OF MATERIALS Materi
23、als defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials Engineering activity. Upon request, the Supplie
24、r 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, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material App
25、roved Source List. ENGINEERING MATERIAL SPECIFICATION WSK-M4D709-A WP 3948-b Page 5 of 6 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements to the specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.5E-5/ C (ASTM D 696
26、) 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 0.8 - 1.0 % 5.2.2 Post Shrinkage After 48 h at 80 C 0.1 - 0.2 % 5.3 MELT VOLUME RATE 4 - 10.5 cm3/ (ISO 1133/ASTM D 1238, 220 C, 10 kg) 10 minutes The materi
27、al shall be dried for min of 2 h at 80 - 85 C in a mechanical convection oven immediately preceding the test. 5.4 HEAT DEFLECTION TEMPERATURE, min 95 C (ISO 75/ASTM D 648, 120 x 10 x 4.0 +/- 0.2 mm specimen. 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. ENGINEERING MATERIAL SPECIFICATION WSK-M4D709-A WP 3948-b Page 6 of 6
