1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 11 17 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.7, 3.8 & 4 1988 09 15 Released ESF-M3D121-A2 107002-185-CF4S 1973 04 19 Released ESF-M3D121-A F6C-136 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page
2、1 of 2 UNSATURATED POLYESTER (UP), GLASS FIBER ESF-M3D121-A1 REINFORCED, BULK MOLDING COMPOUND (BMC) ESF-M3D121-A2 1. SCOPE The materials defined by these specifications are glass fiber reinforced thermoset polyester resin premixes. These materials have high strength, are self-extinguishing, and hav
3、e a relatively high heat deflection temperature values. 2. APPLICATION These specifications were released originally for materials used to mold such items as blower motor housing and brush plates (ESF-M3D121-A1), the alternator rotor (ESF-M3D121-A2). ESF-M3D121-A1 replaces and is same as ESF-M3D121-
4、A. 3. REQUIREMENTS 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). 3.4 MOLDED TEST SPECIMEN 3.4.1 Preparation of Test Specimens All test specimens shall be prepared
5、from molded plaques or equivalent. The plaques are to be manufactured from the same material and under equivalent conditions as production parts. Prepared specimens must show no evidence of fiber tear or loose fibers protruding from the specimens. No additional annealing of specimens is allowed. A1
6、A2 3.4.2 Density 1.70 - 2.05 1.70 - 2.05 ISO 1183, Method A/ASTM D 792, Method A1) 3.4.3 Glass Fiber Content, By Weight, % min 15 12 Test Method: ISO 3451/1, Method B, 1 h at 650 +/- 25 C, except use 5% by volume hydrochloric acid solution for 15 min. Rinse the glass fibers several times with distil
7、led water before drying in an oven for 2 h at 120 +/- 2 C. After cooling, weigh the crucibles and calculate the percent glass fibers. ENGINEERING MATERIAL SPECIFICATIONESF-M3D121-A1/A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 A1 A2 3.4.4 Tensile Streng
8、th, MPa, min 41.4 49 (ISO R 527/ASTM D 638, 150 min x 12.7 x 3.2 mm specimen, 5 mm/min test speed) 3.4.5 Flexural Strength, MPa, min 128 112 (ISO 178/ASTM D 790, Method I, Procedure A, 130 x 12.7 x 3.2 mm specimen, 50 mm support span) 3.4.6 Compressive Strength, MPa, min 152 168 (ASTM D 695, 12.7 x
9、12.7 x 25 mm specimen, 1.3 mm/min test speed) 3.4.7 Impact Strength, Izod, J/m, min 267 424 (ISO 180, Method A/ASTM D 256, Method A, 63.5 x 12.7 x 3.2 mm specimen, 10 specimen minimum) 3.4.8 Water Absorption, % max 0.2 0.2 (ISO 62, 24 h/ASTM D 570, 24 h) 3.4.9 Heat Deflection Temperature, C min 232
10、260 (ISO 75/ASTM D 648, 130 x 12.7 x 12.7 mm specimen, at 1.82 MPa) 3.5 FLAMMABILITY SE/NBR (ISO 3795/SAE J369) The specimen size required for material approval is 355 x 100 x 6.4 +/- 0.2 mm with a smooth surface. 3.6 ELECTRICAL PROPERTIES 3.6.1 Dielectric Strength, kV/mm, min (IEC 243/ASTM D 149, in insulating oil, 3.2 +/- 0.2 mm thick specimen) 3.6.1.1 Short Time 12.8 13.6 3.6.1.2 Step by Step 11.8 11.8 (5 - 10 kV starting voltage, 20 s steps) 3.6.2 Arc Resistance, s, min 150 180 (ASTM D 495)
