O-1 Tool Steel
  Heat treat temperature 1450-1600 F
  Quench Oil
  Hardness Rockwell 62c-64c
  Applications Taps
Reamers
Knurling Tools
Shear Blades
Drills
Coining Dies
Trimming Dies
  Disadvantages Oil hardening tool steels tend to experience less distortion during the quench operation, but they do still show distortion from the original size. The hardening operation is more thorough than with water hardening steels, but not as thorough as the air-hardening grades.

  • O-1 Drill Rod
  • O-1 Flat Stock (Oversize)
  • O-1 Flat Stock, Precision Ground
  • O-1 Square Stock
  • O-1 Square Stock (Oversize)