1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2010 01 07 N-STATUS No replacement named J. Crist, NA 2000 10 26 Revised Updated A. Cockman 1990 06 20 NBOOE1004306401 Released L. A. Graham L. Moriarty Printed copies are uncontrolled Page 1 of 4 Copyright
2、2010, Ford Global Technologies, Inc. STYRENE MALEIC ANHYDRIDE (SMA) COPOLYMER, ESB-M4D489-A3 RUBBER MODIFIED NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a rubber modified, styrene maleic anhydride copolymer that is foamed and painted. 2. APPLICATION This spec
3、ification was released originally for material used as the structural foam console. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to the Companys Quality Sy
4、stem 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 laboratory. All samples shall produce IR spectra and thermograms that cor
5、respond 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 +/- 5 % relative humidity for not less than 24 h prior to testing and teste
6、d under the same conditions unless otherwise specified. 3.4 MOLDING COMPOUND 3.4.1 Melt Flow Rate 0.65 - 1.15 g/10 minutes (ISO 1133/ASTM D 1238, 230 C, 2.16 kg) ENGINEERING MATERIAL SPECIFICATION ESB-M4D489-A3 Page 2 of 4 Copyright 2010, Ford Global Technologies, Inc. 3.5 MOLDED TEST SPECIMEN 3.5.1
7、 Preparation 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 12.7 x 3.2 +/- 0.2 mm (Tensile Bar) B. 130 x 12.7 x 3.2 +/- 0.2 mm Specimens with shorter dimensions shall be
8、 cut 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 30 MPa (ISO R 527/ASTM D 638, 150 min x 12.7 x 3
9、2 +/- 0.2 mm specimen, 50 mm/min test speed) 3.5.3.1 Elongation at Break, min 5 % (Test Method according to para 3.5.3) 3.5.4 Flexural Modulus, min 2.4 GPa (ISO 178/ASTM D 790, Method I, Procedure A, 130 x 12.7 x 3.2 +/- 0.2 mm specimen, 64 mm support span) 3.5.5 Impact Strength, Izod, min (ISO 180
10、 Method A/ASTM D 256, Method A, 63.5 x 12.7 x 3.2 +/- 0.2 mm specimen, 10 specimens for each test) 3.5.5.1 At 23 +/- 2 C 12 kJ/m23.5.6 Heat Deflection Temperature, min (ISO 75/ASTM D 648, 130 x 12.7 x 3.2 +/- 0.2 mm specimen) 3.5.6.1 At 1.82 Mpa 84 C 3.5.6.2 At 0.45 Mpa 103 C ENGINEERING MATERIAL S
11、PECIFICATION ESB-M4D489-A3 Page 3 of 4 Copyright 2010, Ford Global Technologies, Inc. 3.6 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 90 Formation of clear film, droplets or crystals is cause for rejection. 3.7 FLAMMABILITY (ISO
12、3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 3.2 +/- 0.1 mm with a smooth surface. 3.8 ADDITIONAL REQUIREMENTS Additional requirements for material and/or manufactured parts may be specified on the Engineering drawing, Engineering parts specifica
13、tion, performance specification, System Design Specification (SDS) and/or Component Design Specification (CDS). In addition to meeting the molding compound requirements, the material must also meet the following requirement after foaming: 3.8.1 Density, Reduction From Original 1 - 5 % (ISO 1183, Met
14、hod A/ASTM D 792, Method A1) 3.9 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 the material originally approved under this specification, wheth
15、er 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 of the Company, further instructions will be provided. Note: S
16、uppliers 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 document. The restrictions are identified in Restricted Substance M
17、anagement Standard WSS-M99P9999-A1. ENGINEERING MATERIAL SPECIFICATION ESB-M4D489-A3 Page 4 of 4 Copyright 2010, Ford Global Technologies, Inc. 4. APPROVAL OF MATERIALS Materials defined by this specification for direct supply to the Company must have prior approval. Certain materials subcontracted
18、by part suppliers may also require prior approval. 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
19、 Purchasing, Design or Materials Engineering 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
20、 GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 COEFFICIENT OF LINEAR THERMAL EXPANSION 7.7E-5/ C (ASTM D 696) 5.2 MOLD SHRINKAGE (ASTM D 955) After 48 h at 23 +/- 2 C 0.5 - 0.7 % 5.3 WATER ABSORPTION, By Weight 0.12 % (ISO 62, 24 h/ASTM D 570, 24 h immersion)
