1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revision 2010 02 18 N-STATUS Replaced by EN 10084 17CrS3+H, 0.10% V min L. Sinclair, NA 2003 03 13 Revised Para 3.0 Inserted; Para 3.5, 3.6, 4 Deleted 1981 05 15 SM/EQ8778TP Released Printed copies are uncontrolled Pa
2、ge 1 of 2 Copyright 2010, Ford Global Technologies, Inc. STEEL, CHROMIUM VANADIUM ALLOYED SQ-M1A9461-A20H NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a chromium-vanadium alloyed high grade structural steel. 2 APPLICATION This specification was released origin
3、ally for material used for manufacturing transmission gears, which are case-hardened after machining. 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).
4、 3.1 ANALYSIS, % C 0.17 - 0.23 Si 0.20 - 0.35 Mn 0.60 - 1.00 P max 0.040 S max 0.040 Cr 0.60 - 1.00 V min 0.10 Mo 0.02 - 0.08 Ni 0.08 - 0.25 or Sum of Ni + Mo 0.12 - 0.30 (Checking according to SAE J408c; permissible variations according to SAE J409 b). 3.2 HARDENABILITY Must conform to the hardenab
5、ility band given in figure 1. (Checking according to SAE J 406 a). ENGINEERING MATERIAL SPECIFICATION SQ-M1A9461-A20H Page 2 of 2 Copyright 2010, Ford Global Technologies, Inc. 3.3 AUSTENITE GRAIN SIZE 5 - 8 with max 20 % 4 (Checking according to SAE J 418 a). 3.4 DEGREE OF PURITY 3.4.1 Degree Of Pu
6、rity, Macroscopic Must conform to Ford Specification SQ-M99P9000-A. 3.4.2 Degree Of Purity, Microscopic Must conform to Ford Specification SQ-M99P9001-A. THE GRAPHIC WHICH SHOULD APPEAR AT THIS POSITION OF THE SPECIFICATION CAN BE OBTAINED BY REFERENCING THIS SPECIFICATION NUMBER FROM : MATERIALS LABORATORY 13/100 FORD RESEARCH & ENGINEERING CENTRE LAINDON, BASILDON. ESSEX ENGLAND SS15 6EE PHONE: (0268) 403366
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