1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Released 2008 08 21 B - N-STATUS Replaced by WSK-M4D836-A C. Boese, FNA 1994 12 08 Revised and Retyped, was 6 pages 1973 11 20 SM/EQ 0580 Released WP 3948-a Page 1 of 4 ABS, PLATING GRADE, HEAT RESISTANT INACTIVE
2、 SK-M4D9799-A ABS, PLATING GRADE, HEAT RESISTANT NOT TO BE USED FOR NEW DESIGN SK-M4D9799-B 1. SCOPE The material defined by this specification is an acrylonitrile-butadiene-styrene molding compound with high heat resistance. 2. APPLICATION This material is generally used for manufacturing bright de
3、corative electroplated plastic exterior parts such as emblems, radiator grills and/or as specified on the Engineering Drawing. 3. REQUIREMENTS 3.1 REQUIREMENTS FOR THE TEST SPECIMEN Note: The material shall be conditioned for a minimum of 24 h at 23 +/- 2 C and 50 +/- 5 % relative humidity prior to
4、test and tested under the same conditions. Preparation of Test Specimen: Clause 3.1.1: Injection molded test specimens according to ISO 294. The optimum molding conditions shall be as recommended by the supplier of the molding compound. Clause 3.1.2, 3.1.3 and 3.1.4: Molded test specimens according
5、to ISO 293. Test specimens shall be free from strain, or cut from strainless compression molded sheets. 3.1.1 Izod Impact Strength, Notched (ISO R 180, specimen size: 63.5 x 12.7 x 3.2 mm) At 23 C, min 108 J/m At - 40 C, min 49 J/m 3.1.2 Flexural Modulus, min 2.05 kN/mm2 (ISO R 178; specimen size: 8
6、0 x 10 x 4 mm) ENGINEERING MATERIAL SPECIFICATION SK-M4D9799-A SK-M4D9799-B WP 3948-b Page 2 of 4 3.1.3 Shear Modulus, min 765 N/mm2 (ISO R 537, Method A, specimen size: 60 x 10 x 1 mm, test temperature 23 C) 3.1.4 Vicat Softening Point, min 106 C (ISO 306, specimen size: 10 x 10 x 3.2 mm in silicon
7、e oil, except with a weight force of 49 N (5 kgf) 3.2 SPECIFIC REQUIREMENTS OF FINISHED PART As specified on the Engineering Drawing. 3.3. INFRARED SPECTROSCOPY (FLTM EU-A0 50-1) The IR-curve of the granule and/or molded part shall correspond to the curve of the initial laboratory sample as recorded
8、 and filed by the FoMoCo quality control or testing laboratories. It shall serve as a reference curve for quick identification of basic type of material and source and to solve part problems. For second or third suppliers new curves shall be established provided the material meets all other requirem
9、ents of this specification. 3.4 Flammability 3.4.1 SK-M4D9799-A No requirement 3.4.2 SK-M4D9799-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 thickness of 1.8 - 2.0 mm and smooth surfaces. In order to comp
10、ly 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 and method of testing shall be in accordance with FLT
11、M EU-BN 24-2. ENGINEERING MATERIAL SPECIFICATION SK-M4D9799-A SK-M4D9799-B WP 3948-b Page 3 of 4 3.4.2.1 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
12、 a maximum burn rate of 75 mm per minute 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 bas
13、ic material category of this particular specification. 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 24-2, regardless of maximum burn rate, must be evaluat
14、ed 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. 3.5 SUPPLIERS RESPONSIBILITY All materials supplied to this specification
15、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 originally approved under this specification, whether or not such changes affec
16、t 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 the Materials Engineering activity. Test data, test samples and a new code ident
17、ification 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 Specification WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION SK-M4D9799-A SK-M4D97
18、99-B WP 3948-b Page 4 of 4 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
19、 Materials 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
20、 of 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 applications. Upon approval, the material will be added to the Engineering Material Approved Source List.
