- Description
- Technical Info
O1 tool steel rectangle bar is an oil hardening, general purpose tool steel valued for its fine grain structure, excellent machinability, and predictable heat treat response. While it does not match D2 or A2 for wear resistance, O1 offers superior dimensional control and lower distortion during hardening.
Applications: Punches, gauges, bushings, shear knives, precision tooling.
Available Finish: Ground Oversized | Precision Ground