Chemical Composition, weight %

  • Carbon: 2.5-3.6
  • Manganese: 2.0 Max
  • Silicon: 2.0 Max
  • Nickel: 4.5-7.0
  • Chromium: 7.0-11.0
  • Molybdenum: 1.5 Max

Hardness Requirements

  • As Cast: 50 HRC Min.
  • Hardened: 56 HRC Min.