1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 07 14 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3.2, 3.4 & 4 deleted 1971 05 21 Released COA2-969260 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Pa
2、ge 1 of 2 POLYURETHANE MOLDING COMPOUND, ETHER BASED ESA-M2D213-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is an ether based polyurethane extrusion or injection molding compound with good resistance to hydrolysis. 2. APPLICATION This specification was release
3、d originally for material used as a steering column insulator where toughness, resistance to road vibration or shock insulation is required. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For
4、 Production Materials (WSS-M99P1111-A). 3.3 MOLDED TEST SPECIMENS 3.3.1 Preparation of Test Specimens Test specimens shall be obtained from injection molded slabs and post cured for 16 +/- 2 h at 120 +/- 2 C. 3.3.3 Specific Gravity 1.11 - 1.15 (ASTM D 792) 3.3.4 Hardness, Durometer A 78 - 88 (ASTM D
5、 2240) 3.3.5 Ozone Resistance, max Rating 0 (ASTM D 518, Method B) 3.3.6 Tear Strength, min 70 kN/m (ASTM D 624, Die C) 3.3.7 Compression Set, max 50% (ASTM D 395, Method B, 22 h at 70 C) 3.3.8 Tensile Modulus, min (ASTM D 412, Die C) At 50% Elongation 3.1 MPa At 100% Elongation 4.5 MPa At 300% Elon
6、gation 8.3 MPa At Break 27.6 MPa Elongation at Break 400% ENGINEERING MATERIAL SPECIFICATIONESA-M2D213-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.3.9 Low Temperature Brittleness, max -55 C (ASTM D 746) 3.3.10 Hydrolytic Stability, Tensile Modulus Ch
7、ange, max . At 50% Elongation -25% . At 100% Elongation -25% . At 300% Elongation -25% . At Break -25% Test Method: Die C tensile specimens shall be placed in a 118 cm3open top jar which is placed in a 946 cm3screw cap jar containing 150 cm3of distilled water. The screw cap jaw is secured and placed
8、 in a circulating air oven for 96 +/- 1 h at 80 +/- 2 C. Aged specimens are removed, conditioned for 24 +/- 0.5 h at 50% +/- 5% R.H. and 23 +/- 2 C. Tensile modulus is to be determined per para 3.3.8 and percent change reported. 3.3.11 Immersion in Transmission Fluid ESP-M2C138-CJ (ASTM D 471, 48 h
9、at 23 +/- 2 C) After immersion, run tensile modulus on 3 samples conditioned for 16 h at 115 +/- 2 C and on 3 samples after fluid aging. Maximum allowable change in tensile modulus (test according to para 3.3.8). At 50% Elongation -50% At 100% Elongation -50% At 300% Elongation -50% 3.3.12 Immersion
10、 in Brake Fluid ESA-M6C25-A (ASTM D 471, 15 s at 23 +/- 2 C) After immersion, run tensile modulus on 3 samples conditioned for 16 h at 115 +/- 2 C and on 3 samples after fluid aging. Maximum allowable change in tensile modulus (test according to para 3.3.8). At 50% Elongation -15% At 100% Elongation -15% At 300% Elongation -15% 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 MELT FLOW RATE (ASTM D 1238) 1.2 kg at 224 C 18 - 40 g/10 min 8.7 kg at 190 C 8 - 34 g/10 min
