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8630 - Low Alloy Nickel-Chromium Case Hardening Steel

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8630 grade steel is a medium Carbon steel superior to 8620.

This grade responds readily to direct hardening with as quenched surface hardness reaching 46-52 HRc. It can be used for case hardening with good hardenability levels.

This grade demonstrates an excellent forgeability and weldability.

For many applications it can be used as an alternative to more costly heavy alloyed case hardening steels.

Size Range

45mm - 280mm Dia

Typical applications of 8630 grade steel

  • Gears
  • Pins
  • Shafts
  • Camshafts
  • Drive wheels
  • Clutch plates

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Rolled or Forged


Black Bar or Bright Bar

Grades for Potential Substitution (Greater)