1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes Rev 02 2011 03 01 N-Status B suffix No replacement named A Pan, APA 1996 08 26 Inactive C suffix 1985 11 14 C9P1-DR533866 Released WP 3948-a Page 1 of 4 POLYPROPYLENE SHEET, 40% CONTINUOUS GLASS NOT FOR NEW DE
2、SIGN ESB-M4D345-B FIBER REINFORCED ESB-M4D345-C INACTIVE 1. SCOPE The material defined by this specification is a sheet composed of homopolymer polypropylene matrix, reinforced with 40% by weight, continuous glass fiber reinforcement. The reinforcement is arranged in a swirl pattern to give essentia
3、lly isotropic properties. This sheet is specifically designed for thermoplastic stamping. 2. APPLICATION This specification was released originally for material used to manufacture engine covers, load floors and battery trays. 3. REQUIREMENTS 3.1 STATISTICAL PROCESS Suppliers must conform to the req
4、uirements of Ford Quality System Standard Q-101, with control charts and process data analyzed according to Ford Continuing Process Control and Process Capability Improvement Manual. Additionally, a Control Plan is required for initial material/source approval. 3.2 INFRARED SPECTROPHOTOMETRY AND/OR
5、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 thermogram established for initial approval shall constitute the reference standard and shall be kept on file at the designated materi
6、al laboratory. All samples shall produce IR spectra and thermogram that correspond to the reference standard when tested under the same conditions. 3.3 MOLDED TEST SPECIMENS 3.3.1 Preparation of Test Specimens All test specimens shall be prepared from stamped sheets, approximately 200 x 200 x 3.2 +
7、0.2 mm. Preparation of the test specimens shall be according to ASTM D 1928, technique 5. ENGINEERING MATERIAL SPECIFICATION ESB-M4D345-B ESB-M4D345-C WP 3948-bPage 2 of 4 3.3.2 Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosp
8、here 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. 3.3.3 Color Black or Natural 3.3.4 Specific Gravity 1.15 - 1.28 (ASTM D 792) 3.3.5 Glass Fiber Content, by weight 40 + 4% (ASTM D 2584) 3.3.6 Tensil
9、e Strength at Maximum Load, min 83 MPa (ASTM D 638, Type I specimen, 3.2 mm thick, 5.0 mm/min test speed) 3.3.7 Flexural Modulus, min 4900 MPa (ASTM D 790, Method I, Procedure A, 3.2 x 12.7 x 127 mm specimen, 5 mm/min test speed) 3.3.8 Flexural Strength, min 138 MPa (ASTM D 790) 3.3.9 Impact Strengt
10、h, Izod, min 640 J/m (ASTM D 256, 3.2 x 12.7 x 63.5 mm specimen) 3.3.10 Heat Deflection Temperature, min 149 C (ASTM D 648, 3.2 x 12.7 x 127 mm specimens at 1.82 MPa) 3.4 ADDITIONAL REQUIREMENTS 3.4.1 Specific requirements for physical properties of finished parts shall be specified on the engineeri
11、ng drawing and/or engineering part specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing. 3.4.2 Accelerated Weathering Resistance 4-5 Rating 400 h Weatherometer, AATCC, min (FLTM BO 1-1, Gray Scale for Evaluating Change in Color) No
12、te: This requirement is applicable only for exposed interior applications. For approved compounds, see the Approved Source listing. ENGINEERING MATERIAL SPECIFICATION ESB-M4D345-B ESB-M4D345-C WP 3948-bPage 3 of 4 3.5 FLAMMABILITY 3.5.1 ESB-M4D345-B Burn Rate, max 100 mm/min (FLTM BN 24-2, without t
13、he lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above max value. 3.5.2 ESB-M4D345-C 3.5.2.1 In order to comply with Federal Vehicle Safety Standard No. 302, the materials, portions of components, and composites
14、shall not burn, or transmit a flame across its surface, at a rate of more than 100 mm/min. To demonstrate compliance, the sample size and method of testing shall be in accordance with FLTM BN 24-2. 3.6 SUPPLIERS RESPONSIBILITY All materials supplied to this specification must be equivalent in all ch
15、aracteristics 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 originally approved under this specification, whether or not such changes affect the materials ability to
16、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 identification are to be submitt
17、ed 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 WSS-M99P9999-A1, unless a different suffix (e.g., A2 or A3) is specified on the engineering document
18、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 Mater
19、ials 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 ma
20、terial will be added to the Engineering Material Approved Source List. ENGINEERING MATERIAL SPECIFICATION ESB-M4D345-B ESB-M4D345-C WP 3948-bPage 4 of 4 5. GENERAL INFORMATION At the option of the responsible Ford activity, the following data is required for all new suppliers submitting materials for engineering approval. 5.1 MOLD SHRINKAGE 0.002 (ASTM D 955, after 48 h, compression molded sample) 5.2 Coefficient of Linear Thermal Expansion 2.7 x 10-5/C (ASTM D 696, -30 to +30 C)
