Tool Steel O1

Aging Procedure

Not applicable to this alloy.

Annealing Procedure

Anneal at 1450 F and slow furnace cool at less than 40 F per hour.

Applications

Applications include short run tooling for blanking dies, cold forming dies and cutting tools operating at ambient temperature.

Cold Workability

In the annealed condition this alloy may be readily cold worked, much the same as for plain carbon steels.

Forgeability

Forge at 1900 F down to 1575 F. Do not forge below 1550 F.

Formability

O1 alloy can be readily formed in the annealed condition by conventional methods.

Hardening Procedure

See "Heat Treatment" and "Tempering".

Heat Treatability

Slowly preheat to 1200 F and then gradually raise temperature to 1450 - 1500 F and keep at temperature for 10 to 30 minutes. Quench in oil.

Hot Workability

See "Forging".

Machinability

Machinability of this alloy is very good. It has a rating of 90% that of the W group water hardening low alloy tool steels.

Other Comments

This tool steel is relatively inexpensive, yet has adequate hardness and wear resistance for short run tooling use.

Principle Design Features

This alloy is one of the Cold Work, oil hardening type tool steels. It is relatively inexpensive containing small amounts of manganese, tungsten and chromium. Hardening by oil quench minimizes distortion and cracking.

Tempering Procedure

Temper at 350 to 500 F for Rockwell C hardness of 62 to 57.

Weldability

This alloy is weldable by standard means. Consult the alloy supplier for details and procedures.