1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2009 11 19 N-STATUS No replacement named J. Crist, NA 1988 09 15 3.10 Test Method Revised, Retyped 1979 10 04 CF4J-RD572213-36 Released (Was XF-M4DX134) WP 3948-a Page 1 of 3 ACETATE BUTYRATE SHEET, LIGHT CONT
2、ROL ESF-M4D409-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an acetate butyrate sheet containing finely spaced microscopic louvers. 2. APPLICATION This specification was released originally for material used in filters for instruments to obtain a preferred a
3、ngle of optimum viewing. 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 used to analyze p
4、rocess/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 and thermograms
5、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 CONDITIONING AND TEST CO
6、NDITIONS 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 SPECIFIC GRAVITY 1.19 - 1.21 (ASTM D 792)
7、 3.5 TENSILE STRENGTH, min 345 kPa (ASTM D 638) 3.5.1 Elongation, min 20 % ENGINEERING MATERIAL SPECIFICATION ESF-M4D409-A WP 3948-b Page 2 of 3 3.6 FLEXURAL STRENGTH, min 41.4 MPa (ASTM D 790) 3.7 IMPACT STRENGTH, IZOD, min (ASTM D 256) 3.7.1 Across louvers 160 J/m 3.7.2 With louvers 16 J/m 3.8 HAR
8、DNESS, ROCKWELL R, min 35 (ASTM D 785) 3.9 HEAT DEFLECTION TEMPERATURE, min (ASTM D 648) 3.9.1 At 0.45 MPa 66 C 3.9.2 At 1.82 MPa 54 C 3.10 WATER ABSORPTION, max 1.8 % (ASTM D 570, 24 h) 3.11 HAZE, max 4 % (ASTM D 1003) 3.12 LUMINOUS TRANSMISSION, min (ASTM D 1003) Clear 80 % Colored 15 % 3.13 WEAR
9、RESISTANCE, min (FLTM BO 19-1 except evidence of scratching will be considered a failure) Clear 40 000 cycles Colored 30 000 cycles 3.14 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally
10、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 ability to meet the specification requirements, the Supplier shall notify Pur
11、chasing, 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. ENGINEERING MATERIAL SPECIFICATION ESF-M4D409
12、A WP 3948-b Page 3 of 3 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 suffix (e.g., A2 or A3) is specified on the engineering docum
13、ent 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 expression of interest from the affected Purchasing, Design and M
14、aterials 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, and test specimens for Ford evaluation. Upon approval, the material will be added to the Engineering Material Approved Source List.
