1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2010 01 07 N-STATUS No replacement named J. Crist, NA 2000 09 25 Revised Updated A. Cockman 1982 09 23 CLN2-1R004101-CL Released R. Ocobock Printed copies are uncontrolled Page 1 of 3 Copyright 2010, Ford Gl
2、obal Technologies, Inc. STYRENE MALEIC ANHYDRIDE TERPOLYMER (SMA), ESA-M4D434-A1 MODIFIED MOLDING COMPOUND, GENERAL PURPOSE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a modified styrene maleic anhydride terpolymer molding compound with high impact strength a
3、nd excellent thermal properties. 2. APPLICATION This specification was released originally for material used in painted wheel cover or ornament applications. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 QUALITY SYSTEM REQUIREMENTS Mat
4、erial suppliers and part producers must conform to the Companys Quality System Requirements. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be kept on file at the designated material
5、 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 CONDITIONS All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +
6、/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. All test values indicated herein are based on material and specimens with moisture content not exceeding 0.3 %. All test materials immediately after processing have to be
7、 sealed in containers that are impermeable to water vapor. If the moisture content exceeds 0.3 %, condition the material for a minimum of 16 h at 40 - 50 C at a reduced pressure below 133 Pa. ENGINEERING MATERIAL SPECIFICATION ESA-M4D434-A1 Page 2 of 3 Copyright 2010, Ford Global Technologies, Inc.
8、Conduct tests in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity. Individual specimens shall not be removed from closed containers until immediately before testing. 3.4 MOLDED TEST SPECIMENS 3.4.1 Specific Gravity, min 1.04 (ASTM D 792) 3.4.2 Tensile Strength, min 29.7 MPa (AS
9、TM D 638, 50 mm/min test speed) 3.4.2.1 Elongation at Break, min 25 % 3.4.3 Flexural Yield Strength, min 55 MPa (ASTM D 790, 6.4 x 12.7 mm specimen) 3.4.4 Flexural Modulus, min 2.2 GPa (ASTM D 790, 6.4 x 12.7 mm specimen) 3.4.5 Impact Strength, Izod, min 145 J/m (ASTM D 256) 3.4.6 Heat Deflection Te
10、mperature, min 102 C (ASTM D 648, unannealed, at 1.82 MPa) 3.4.7 Hardness, Rockwell R 109 (ASTM D 785) 3.4.8 Water Absorption, max 0.5 % (ASTM D 570, 24 h immersion) 3.5 ADDITIONAL REQUIREMENTS Additional requirements for material and/or manufactured parts may be specified on the Engineering drawing
11、, Engineering parts specification, performance specification, System Design Specification (SDS) and/or Component Design Specification (CDS). 3.5.1 Paintability When painted, the finished part shall conform to the requirements of the Engineering performance specification ESB-M2P80-A. ENGINEERING MATE
12、RIAL SPECIFICATION ESA-M4D434-A1 Page 3 of 3 Copyright 2010, Ford Global Technologies, Inc. 3.6 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 changes to t
13、he material originally approved under this specification, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify the affected Purchasing, and Materials Engineering activities (with reasons) of the proposed changes. Upon notification
14、 of the Company, further instructions will be provided. Note: Suppliers should be prepared to provide test data and samples demonstrating compliance to this specification, if requested. Substance restrictions imposed by regulations or Company direction applies to the materials addressed by this docu
15、ment. The restrictions are identified in Restricted Substance Management Standard WSS-M99P9999-A1. 4. APPROVAL OF MATERIALS Materials defined by this specification for direct supply to the Company must have prior approval. Certain materials subcontracted by part suppliers may also require prior appr
16、oval. These include materials critical to the Companys business for regulatory, safety, environmental or compatibility requirements or contractual agreements. Suppliers desiring approval of their materials shall first obtain an expression of interest from Purchasing, Design or Materials Engineering
17、activity. Upon request, the Supplier shall submit 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 this specification. 5. GENERAL INFORMATION The information given b
18、elow is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 9.4E-5/ C 5.2 MOLD SHRINKAGE 0.4 - 0.6 % (ASTM D 955) 5.3 APPROVED COATING MATERIALS Paint, Color Coat - (ESB-M99J248-A) First Surface Exterior 5.4 RECYCLING CODE SMA
