1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 21 B/C/D N-STATUS No Replacement Named C. Mracna, NA 2004 09 09 Revised Para 3.0 inserted; para 3.3, 3.4, 3.5 CAJ2-990061-C2 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 3 POLYURETHANE ELASTOM
2、ER ESA-M2D287-A NOT TO BE USED FOR NEW DESIGN ESA-M2D287-B NOT TO BE USED FOR NEW DESIGN ESA-M2D287-C NOT TO BE USED FOR NEW DESIGN ESA-M2D287-D 1. SCOPE The materials defined by these specifications are medium hard polyurethane elastomers. 2. APPLICATION These specifications were released originall
3、y for material used as an insulator in transmission throttle valve rods and rebound stop on shock absorbers. 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-M99P1
4、111-A). 3.1 MOLDED TEST SPECIMENS 287-A 287-B 287-C 287-D 3.1.1 Original Properties Tensile Strength, 40 27 40 40 MPa, min (ASTM D 412, 508 mm/min test speed) Elongation, % min 500 450 500 450 Modulus at 100% 10 8 8 9 Elongation, MPa, min Modulus at 300% 15 12 12 15 Elongation, MPa, min Tear Strengt
5、h, 80 50 96 100 kN/m, min (ASTM D 624, Die C) Hardness, Durometer A 92 +/- 5 92 +/- 5 90 +/- 4 94 +/- 4 (ASTM D 2240) ENGINEERING MATERIAL SPECIFICATIONESA-M2D287-A/B/C/DPrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 287-A 287-B 287-C 287-D Specific Gravity
6、, +/- 0.02 1.15 1.13 1.16 1.19 (ASTM D 792) 3.1.2 Oven Aged 100 C 100 C 150 C 150 C (ASTM D 573, 70 h at *) Tensile Strength +/- 25 +/- 25 +/- 15 +/- 20 Change, % Elongation Change, % +/- 10 +/- 15 +/- 15 +/- 15 Hardness Change +/- 3 +/- 3 +/- 3 +/- 3 3.1.3 Immersion in ASTM Oil #1 100 C 100 C 125 C
7、 125 C (ASTM D 471, 70 h at *) Tensile Strength +/- 20 +/- 30 +/- 40 +/- 30 Change, % Elongation Change, % +/- 15 +/- 10 +/- 20 +/- 15 Hardness Change +/- 5 +/- 5 +/- 5 +/- 5 Volume Change, % +/- 3 +/- 3 +/- 3 +/- 3 3.1.4 Immersion in ASTM Oil #3 100 C 100 C 125 C 125 C (ASTM D 471, 70 h at *) Tensi
8、le Strength +/- 55 +/- 55 +/- 55 +/- 55 Change, % Elongation Change, % +/- 15 +/- 15 +/- 40 +/- 15 Hardness Change +/- 3 +/- 5 +/- 7 +/- 5 Volume Change, % +/- 15 +/- 20 +/- 20 +/- 15 *Temperature Tolerance +/- 2 C 3.1.5 Ozone Rating 0 0 0 0 (FLTM BP 101-01) ENGINEERING MATERIAL SPECIFICATIONESA-M2D
9、287-A/B/C/DPrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 3 of 3 287-A 287-B 287-C 287-D 3.1.6 Compression Set, % max 45.0 45.0 40.0 45.0 (ASTM D 395, Method B, 22 h at 70 +/- 1 C; 100 +/- 2 C for C & D Suffix) 3.1.7 Brittleness Point, C, max -40 -40 -40 -40 (ASTM D 2137, Method A) 3.2 MOLDED PARTS 3.2.1 Specific Gravity +/- 0.02 1.15 1.13 1.16 1.19 (ASTM D 792) 3.2.2 Hardness, 92 +/- 5 92 +/- 5 90 +/- 4 94 +/- 4 Durometer A (ASTM D 2240)
