1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Release No. Revisions 2010 06 11 N-STATUS No replacement named A. Pan, APA 1986 01 10 CAQ1-RD535224 Revised 1984 04 13 C5N1-ED462577-1 Released Page 1 of 4 POLYBUTYLENE TEREPHTHALATE, IMPACT MODIFIED - ESB-M4D462-A1 10 % GLA
2、SS FIBER REINFORCED NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is an impact modified, 10 % glass fiber reinforced polybutylene terephthalate (PBT). 2. APPLICATION: This specification was released originally for material used to manufacture electrical connector
3、s and mirror covers. 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 proc
4、ess/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 curves established for initial
5、 approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified on the master curve. 3.3 MOLDING COMPOUND 3.3.1 Melt
6、Flow Rate 14 - 25 g/10 (ASTM D 1238, 266 C, 5.0 kg) min 3.3.2 Glass Fiber Content, by Weight 8 - 12 % (1 h at 649 C) 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be injection molded in accordance with ASTM D 1897. The values of this specification are based on
7、 injection molded specimens unless otherwise specified. ENGINEERING MATERIAL SPECIFICATION ESB-M4D462-A1 Page 2 of 4 3.4.2 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
8、 not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.4.3 Specific Gravity 1.28 - 1.32 ASTM D 792) 3.4.4 Tensile Strength at Maximum Load, min 62 MPa (ASTM D 638, Type I specimen, 3.2 mm thickness, 50 mm/mn test speed) Elongation at Break, min 4 % 3.
9、4.5 Flexural Modulus, min 2.7 GPa (ASTM D 790, Method I, Procedure A, 3.2 x 12.7 x 127 mm specimen, 5 mm/mn test speed) 3.4.6 Flexural Elongation at Break, min 8 % (ASTM D 790, Maximum Strain, Method I, 3.2 x 12.7 x 127 mm specimen, 5 mm/mn test speed) 3.4.7 Impact Strength, Izod, min 160 J/m (ASTM
10、D 256, 3.2 x 12.7 x 63.5 mm specimen, minimum of 10 specimens) 3.4.8 Heat Deflection Temperature, min 110 C ASTM D 648, 3.2 x 12.7 x 127 mm specimens, 1.82 MPa) 3.4.9 Dielectric Strength, min 19 kV/mm (ASTM D 149, short time) 3.4.10 Flammability, max 100 mm/mn (FLTM BN 24-2, without the lot sampling
11、 plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above max value. 3.5 ADDITIONAL REQUIREMENTS 3.5.1 Specific requirements for physical properties of finished parts shall be specified on the engineering drawing and/or engineerin
12、g part specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing. ENGINEERING MATERIAL SPECIFICATION ESB-M4D462-A1 Page 3 of 4 3.5.2 The following requirements will be used as acceptance criteria for molded parts. The tests indicated wi
13、ll be conducted by Ford Motor Company at its option or by the part molder as specified by the affected Design Engineering Activity or SQA. Melt Flow Rate, max Two times the (ASTM D 1238, actual value 266 C, 5.0 kg) obtained for virgin mater- ial from the same batch from which the part was molded. 3.
14、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 change in the properties, composition, construction, color, processing or labelling of the material origin
15、ally 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 the Mat
16、erials 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 Material Specification W
17、SS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document 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
18、materials shall first obtain an expression of interest from the affected Purchasing, Design and Materials 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), th
19、e 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. 5. GENERAL INFORMATION: The information given below is provided for assistance and clarification and does not represent requirem
20、ents to this specification. 5.1 MOLD SHRINKAGE (ASTM D 955, after 48 h, injection molded sample) 0.007 - 0.010 5.2 COEFFICIENT OF LINEAR THERMAL EXPANSION 2.5 x 10 -5/ C ENGINEERING MATERIAL SPECIFICATION ESB-M4D462-A1 Page 4 of 4 5.3 FLEXURAL STRENGTH, min 96 MPa (ASTM D 790) 5.4 WATER ABSORPTION, max 0.10 % (ASTM D 570, 24 h immersion) 5.5 HEAT DEFLECTION TEMPERATURE, min 160 C (ASTM D 648, 0.45 MPa)
