1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Released 2009 08 11 A - N-STATUS Replaced by WSK-M4D792-A2 A. Pan, AP 2008 08 21 B - N-STATUS WSS-M4D9792-B replaced by WSK-M4D792-A2 C. Boese. FNA1982 05 26 SM/EQ 9026 TP Released WP 3948-a Page 1 of 7 ABS MOLDI
2、NG COMPOUND, VERY HIGH HEAT RESISTANT SJ-M4D9792-A ABS MOLDING COMPOUND, VERY HIGH HEAT RESISTANT SJ-M4D9792-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a very high heat resistant acrylonitrile-butadiene-styrene molding compound. 2. APPLICATION The material
3、 was originally released for manufacturing of instrument cluster bezel. 3. REQUIREMENTS Note: The material shall be conditioned for a minimum of 24 h at 23 +/- 2 C and 50 +/- 5 % relative humidity prior to test and tested under the same conditions unless otherwise specified. The minimum and maximum
4、values of this specification are based on natural colored and pigmented material. 3.1 REQUIREMENTS FOR TEST SPECIMENS All tests shall be carried out on injection molded specimens with the exception of clause 3.1.6. The test specimens may be either compression molded, injection molded or extruded. Pr
5、eparation of Injection Molded Test Specimens: Preparation of specimens according to ISO 294. The optimum molding conditions shall be as recommended by the supplier of the molding compound. Test specimens must not be annealed. 3.1.1 Density, Natural Colored 1.04 - 1.07 Mg/m3 (ISO R 1183, Method A) Th
6、is range may be exceeded by pigmented material. 3.1.2 Yield Point, min 50 MPa (ISO R 527, Type 1, thickness of specimen: 3.0 - 3.2 mm, test speed: 50 mm/minute) ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A DELTA SJ-M4D9792-B WP 3948-b Page 2 of 7 3.1.3 Izod Impact Strength, Notched (ISO R 180, sp
7、ecimen size: 63.5 x 12.7 x 3.2 mm, number of specimen: min 10 for each test) At 23 C, min 100 J/m At - 40 C, min 35 J/m Note: The test specimens must be injection molded in the above mentioned size with front end gating and shall not be cut from larger test specimens. Maximal fin 0.1 mm. The test sp
8、ecimens must be stored 6 - 8 h at - 40 C prior to cold impact test. Testing shall be done within the cold box, if not possible, test can be conducted outside, but within 3 seconds. 3.1.4 Shear Modulus (ISO R 537, Method A, specimen size: 60 x 10 x 1 mm) At 23 C 940 - 1270 MPa Additionally a shear mo
9、dulus curve shall be plotted from - 50 C to + 140 C and shall be within the tolerance range shown on page 7. At least one measurement at 5 C intervals is necessary to establish the curve. Note: The test specimens must be injection molded in the above mentioned size with front end gating and shall no
10、t be cut from larger test specimens. 3.1.5 Vicat Softening Point, At 49 N, min 112 C (ISO 306, specimen size: 10 x 10 x 3.2 mm, in silicone oil, except dial gauge is set to zero after weight has been added, to be measured with weight force of 49 N increase of bath temperature 50 +/- 5C/h. Specimen c
11、ut from center of tensile bar) Test Conditions: Specimen dry as injection molded in case that specimens cannot be tested immediately after molding, they have to be kept in a sealed air moisture proof container filled with silica gel. ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A SJ-M4D9792-B WP 39
12、48-b Page 3 of 7 3.1.6 Flammability 3.1.6.1 SK-M4D9792-A (ISO 3795) Burn Rate, max 100 mm/minute Unless specified on drawing. DELTA 3.1.6.2 SK-M4D9792-B (FLTM EU-BN 24-2) Burn Rate, max 100 mm/minute Note to Flammability: The flammability shall be determined on 100 x 355 mm specimens with a thicknes
13、s of 1.8 - 2.0 mm and smooth surface. In order to comply with Federal Motor Vehicle Safety Standard No. 302, the materials, portions of components, and composites shall not burn or transmit a flame across their surface, at a rate of more than 100 mm/minute. To demonstrate compliance, the sample size
14、 and method of testing shall be in accordance with FLTM EU-BN 24-2. 3.1.6.2.1 Performance - Environmental Ageing Requirement All materials, portions of components, and composites defined by this specification that have not been treated, modified or reformulated, and exceed a maximum burn rate of 75
15、mm per m as specified by the Flammability Lot Sampling Plan of FLTM EU-BN 24-2, must be evaluated for permanency of the materials flame retardant properties per SK-M99P9500-A, Table 1 according to the accelerated environmental ageing requirements applicable to the basic material category of this par
16、ticular specification. ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A SJ-M4D9792-B WP 3948-b Page 4 of 7 Any material, portions of components, and composites defined by this specification that have been treated, modified or reformulated to conform to Flammability Lot Sampling Plan of FLTM EU-BN 24-
17、2, regardless of maximum burn rate, must be evaluated for both permanency of materials flame retardant properties and changes in mechanical, chemical and physical properties per SK-M99P9500-A, Table 1 applicable to the basic material category of this particular specification. 3.2 SPECIAL REQUIREMENT
18、S 3.2.1 Accelerated Weather Resistance Rating 4, 200 SFH (FLTM BN 1-1, Fadometer) This requirement applies only for self-colored material in design approved interior colors and is omitted for natural colored material. After exposure the material shall show no fading or color change in excess of spec
19、ified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 step). In addition, there shall be no cracking, crazing or other deterioration. A slight loss of gloss or deposit will be allowed provided an acceptable appearance can be achieved by washing with water and mild detergent (ratio
20、95:5 by volume). Specimen size: 100 x 70 x 3.0 +/- 0.2 mm Specimens to be molded in a high gloss polished mold. 3.3 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
21、 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 conditions.
22、3.4 SUBSTANCE CONTROL Legal, health, safety and environmental constraints may apply to the materials which are submitted for approval to this specification. Refer to the Engineering Material Specification WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A SJ-M4D9792-B WP 3948-b Page 5
23、of 7 3.5 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in 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
24、originally approved under this specification, whether or not such changes affect the materials ability 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 t
25、he Materials Engineering activity. Test data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Materials Specific
26、ation WSS-M99P9999-A1. 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 expression of interest from the affected Purchasing, Design and Mat
27、erials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full compliance with all the requirements of
28、this specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or a
29、pplications. Upon approval, the material will be added to the Engineering Material Approved Source List. ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A SJ-M4D9792-B WP 3948-b Page 6 of 7 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the r
30、equirements of this specification. 5.1 FLEXURAL MODULUS, min 2500 MPa (ISO 178, tangent, specimen size: 80 x 10 x 4 mm) Sr -Factor 0.01 5.2 MELT INDEX, min 1.5 g/10 minutes (ISO R 1133, except at 220 +/- 0.5 C with a weight force of 98.1 N) 5.3 COEFFICIENT OF LINEAR THERMAL EXPANSION, max 8 x 10E-51/C (ASTM D 696) 5.4 MOLD SHRINKAGE 0.3 - 0.7 % (ASTM D 955, after 48 h) ENGINEERING MATERIAL SPECIFICATION SJ-M4D9792-A SJ-M4D9792-B WP 3948-b Page 7 of 7
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