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1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2006 10 12 N-STATUS Replaced by ESA-M4D190-A; Inserted 3.0; Deleted 3.1, 3.6 & 4 R. Lord 1995 06 14 Revised Retyped, Revised and Removed ESB-M4D175-B 1964 03 12 Released A AT1-1091, 1971 08 13 Released B AB1-302-10 Printed copies are uncontro
2、lled Copyright 2006, Ford Global Technologies, LLC Page 1 of 3 POLYPROPYLENE (PP), MEDIUM IMPACT - ESB-M4D175-A MOLDING COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a medium impact grade polypropylene molding compound. 2. APPLICATION This specificatio
3、n was released originally for material used for automotive interior trim items such as the cowl side kick panel. 3. REQUIREMENTS In addition to the requirements listed herein, the material shall meet all requirements of ESB-M8P4-A when used for interior trim applications. Material specification requ
4、irements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 APPEARANCE The color, pattern, and finish shall m
5、atch the approved Design Center master sample, or shall be as specified on the engineering drawing. 3.3 MOLDED TEST SPECIMEN AND/OR MOLDED PARTS 3.3.1 Specific Gravity, min 0.90 (ASTM D 792) 3.3.2 Tensile Strength at Max Load, min 24.2 MPa (ASTM D 638, 50 mm/minute test speed) Elongation at Max Load
6、, min 8.5% 3.3.3 Flexural Modulus, min 862 MPa (ASTM D 790) -,-,- ENGINEERING MATERIAL SPECIFICATION ESB-M4D175-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.3.4 Impact Strength, Izod, min (ASTM D 256) Notched 107 J/m Unnotched 1335 J/m 3.3.5 Hardness,
7、 Rockwell R, min 65 (ASTM D 785) 3.3.6 Water Absorption, max 0.1% (ASTM D 570, 24 h immersion) 3.3.7 Heat Deflection Temperature, min (ASTM D 648) At 0.45 MPa 82 C At 1.82 MPa 54 C 3.3.8 Stiffness in Flexure, min 690 MPa (ASTM D 747) 3.3.9 Melting Temperature, min 160 C (FLTM BO 021-02) 3.3.10 Melt
8、Flow Rate 2 - 6 g/10 minutes (ASTM D 1238, 230 C, 2.16 kg) 3.3.11 Physical Properties Specific requirements for physical properties of molded parts, when required, shall be specified on the engineering drawings or the engineering specification. 3.3.12 Flexibility No cracks Cut 25 x 100 mm test strip
9、s from several locations of functional part. Bend 180 (with and against grain direction) around 6.4 mm diameter mandrel at 23 +/- 2 C. Test to be conducted with both textured and back surfaces against mandrel. 3.3.13 Heat Resistance Parts shall show no visible evidence of shrinkage or distortion, or
10、 shall there be local shrinkage where the part has been gated which will interfere with assembly to mating parts, or affect its appearance. The part shall not warp to an extent that would affect its use in ultimate assembly. Test Method: Condition unassembled parts in car position for 3 h at 82 +/-
11、3 C (or as specified on engineering drawing). ENGINEERING MATERIAL SPECIFICATION ESB-M4D175-A Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.3.14 Paintability When painted, for interior use, the finished part shall conform to the requirements of ESB-M3P83
12、-B. 3.4 FLAMMABILITY, max 101 mm/minute (FLTM BN 024-02, without the lot sampling plan) In addition, the test specimen shall not exhibit any flashing or sudden flaming on either surface in excess of the above maximum value. 3.5 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must c
13、onform to Quality System Requirements, QS-9000. Material specification requirements are to be used for initial qualification of materials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the relevant Ford Materials activity and/or Ford Suppl
14、ier Technical Assistance (STA) prior to production parts submission. Appropriate statistical tools must be used to analyze process/product data and assure consistent processing of the materials. Part producers using this material in their products, must use Ford approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. -,-,-