1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 25 N-STATUS No replacement named C. Mracna, NA 2004 06 28 Revised Para 3.0 inserted; para 3.9 & 4 deleted 1963 06 12 Released AS1 #927 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 2 RUBBER - S
2、CRAP TIRE CASING ESB-M2D114-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is rubber impregnated cotton, rayon or nylon, utilizing rubber from tires. 2. APPLICATION This specification was released originally for material used in die cut parts, such as splash shie
3、lds, stone deflectors, anti-squeak materials, tail pipe hangers and other types of suspension applications. 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-M99P11
4、11-A). 3.1 DIMENSIONS As specified on engineering drawings and shall include thicknesses up to 0.75 in (19.0 mm). 3.2 TENSILE STRENGTH, min 1700 psi (ASTM D 412, Die “C“) (11.7 MPa) Elongation, max 65% 3.3 WATER ABSORPTION, max 5% Test Method: Specimens 1 x 2 in (25 x 50 mm) shall be totally immerse
5、d in water for 24 h at 23 +/- 2 C. The weight increase shall then be computed. 3.4 HEAT AGED (ASTM D 573, 70 h at 70 C) Tensile Strength Change, max -25% Flexibility The material shall show no evidence of cracking when bent back on itself 3.5 HEAT RESISTANCE No failure, (Mechanical convection oven,
6、30 min such as at 204 +/- 3 C) cracking or rubber flow. ENGINEERING MATERIAL SPECIFICATIONESB-M2D114-A Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 3.6 LOW TEMPERATURE FLEXIBILITY AT -29 C No cracking Test Method: Condition for 4 h at -29 C and bend 180 a
7、round a 1/2 in (13 mm) mandrel. 3.7 FLEX LIFE 100,000 CYCLES No cracking or fracture Test Method: Specimens 1 x 6 in (25 x 150 mm) shall be mounted in a flex cycling unit with specimen exposure of 4 in (100 mm) in fully open position and providing a 2.5 in (64 mm) loop in closed position. The material shall be cycled at the rate of 300 +/- 25 cycles/min in DeMattia flex machine or equivalent, per ASTM D 813. 3.8 QUALITY Shall be clean, reasonably free from ply separations, loose cords and any defective areas which will affect performance.
