Chemical Composition, weight %

  • Carbon: 2.0-3.3
  • Manganese: 2.0 Max
  • Silicon: 1.5 Max
  • Nickel: 2.5 Max
  • Chromium: 14.0-18.0
  • Molybdenum: 3.0 Max
  • Copper: 1.2 Max

Hardness Requirements

  • As Cast: 46 HRC Min.
  • Hardened: 56 HRC Min.