IS 9175 : Part 22 : 1987 Specification for Rationalized Steels for Automobile and Ancillary Industry, Mechanical and Physical Properties - Part 22 40Cr4Mo3 Grade steel

1 Scope

1.1 This standard (Part 22) covers the chemical composition, mechanical properties, hardenability and isothermal transformation characteristics of 40Cr4Mo3 grade of steel for use by automobile and ancillary industry.

1.2 This is an alloy steel intended to be used in the hardened and tempered condition.

2 References

IS 2 :1960 Rules for rounding off numericalvalues

IS 1500 :1983 Method for Brinell hardness test for metallic materials

IS 1598 :1977 Method for Izod impact test of metals

IS 1608 :1972 Method for tensile testing of steel products