Chemical Composition, weight %

  • Carbon: 2.5-3.7
  • Manganese: 2.0 Max
  • Silicon: 0.8 Max
  • Nickel: 4.0 Max
  • Chromium: 1.0-2.5
  • Molybdenum: 1.0 Max

Hardness Requirements

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