Chemical Composition, weight %

  • Carbon: 2.4-3.0
  • Manganese: 2.0 Max
  • Silicon: 0.8 Max
  • Nickel: 3.3-5.0
  • Chromium: 1.4-4.0
  • Molybdenum: 1.0 Max

Hardness Requirements

  • As Cast: 53 HRC Min.
  • Hardened: 56 HRC Min.