Starrett 57054 O1 Tool Steel Flat Stock 1x1x18 in

Product Description

The STARRETT 57054 is an O1 oil-hardening tool steel flat stock bar measuring 1 inch thick by 1 inch wide by 18 inches long. O1 tool steel is a general-purpose oil-hardening grade known for good machinability in the annealed state and the ability to achieve high hardness after heat treatment. This bar is supplied in flat stock form with closely controlled tolerances, making it well suited for fabricating punches, dies, gauges, and similar precision tooling. Machinists, toolmakers, and die makers are the primary users. The piece weighs approximately 5.1 pounds.

This flat stock is used in job shops, tool-and-die operations, and maintenance-and-repair applications where a readily machinable, oil-hardening steel blank is required. The 18-inch length provides enough stock to yield multiple small tooling pieces from a single bar. It is appropriate for both prototype and production tooling applications that require moderate wear resistance after hardening.

Key Features

• AISI Type O1 oil-hardening tool steel for good machinability before heat treatment and high post-hardening hardness
• 1 inch x 1 inch cross-section in 18-inch length — no further sawing required for many tooling blanks
• Thickness tolerance of +0.0100 to +0.0150 inches for consistent stock removal planning
• Width tolerance of +0.0100 to +0.0150 inches
• Length tolerance of +0.2500 inches
• Squareness held to 0.003 inches per inch on all edges

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat stock blank suitable for machining into punches, dies, gauges, and other tooling components requiring oil-quench heat treatment.

Installation Notes

Cutting and machining of tool steel should be performed by qualified machinists using appropriate feeds, speeds, and cutting fluids for tool steel. Heat treatment to achieve final hardness should follow established procedures for AISI O1 tool steel and be performed by qualified heat-treat personnel. Always wear appropriate personal protective equipment when cutting, grinding, or handling steel stock. Secure the workpiece firmly before any machining operation.