1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 02 2012 03 06 N Status No usage or replacement G. Weber, NA 2003 10 14 Revised Para 3.0 inserted; 3.1, 3.9 and 4 deleted 1986 07 31 Released CEQ2-624770 K. A. Gribble Controlled document at www.MATS Copyright 2012, Ford Global Technologie
2、s, Inc. Page 1 of 1 POWDER METAL, STEEL - DIFFUSION BONDED ESA-M10A82-A1 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is diffusion bonded alloy steel hardened to provide high strength and wear properties. 2. APPLICATION This specification was released originally
3、for materials used for steering column lock pawls. 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). 3.2 CHEMICAL COMPOSITION Carbon 0.5 - 0.8 Nickel 1
4、55 - 1.95 Molybdenum 0.4 - 0.6 Manganese 0.15 max Sulphur 0.025 max Phosphorus 0.015 max Total Other Elements 0.1 max Iron Balance 3.3 TENSILE STRENGTH, min 690 MPa (MPIF Std. 10, machined & polished 5 mm/min) 3.4 YIELD STRENGTH, min 655 MPa (MPIF Std. 10, machined & polished 5 mm/min) 3.5 IMPACT S
5、TRENGTH, CHARPY, min 9.5 J (ASTM E 23, Unnotched) 3.6 COMPRESSIVE STRENGTH (ASTM E 9, 5 mm/min) Specimen Size: 9.50 mm +/- 0.050 mm diameter, 28.70 +/- 0.13 mm length. Compressive Yield Strength, min 1720 MPa Ultimate Compressive Strength, min 2240 MPa 3.7 HARDNESS ROCKWELL C, min 30 (ASTM E 18) 3.8 DENSITY 6.9 - 7.1 g/cm3 (ASTM B 328)
