Starrett 57657 A2 Tool Steel Flat Stock 1-1/4x1-1/2x18 in

Product Description

The STARRETT 57657 is an A2 air-hardening tool steel flat stock bar measuring 1-1/4 inches thick, 1-1/2 inches wide, and 18 inches long. A2 tool steel is an AISI-classified, air-hardening die steel known for its dimensional stability during heat treatment and good wear resistance. This flat stock is supplied in the annealed condition, ready for machining, grinding, and subsequent heat treating. It is intended for use by machinists, toolmakers, and die makers who require tight-tolerance stock for fabricating punches, dies, gauges, and precision tooling components. The bar weighs approximately 9.54 pounds.

This flat stock is suited for tool and die shops, maintenance and repair operations, and production environments where A2 tool steel is the specified material. Typical applications include cutting dies, forming dies, blanking punches, and fixtures that require moderate toughness combined with good wear resistance. The air-hardening characteristic of A2 minimizes distortion during hardening, making it a practical choice for close-tolerance tooling. It is available in single-piece quantities, supporting small-run or one-off tooling projects without excess material waste.

Key Features

• AISI A2 air-hardening tool steel for dimensional stability during heat treatment
• Thickness: 1-1/4 inches with a tolerance of +0.010 to 0.015 inches
• Width: 1-1/2 inches with a tolerance of +0.010 to 0.015 inches
• Length: 18 inches with a tolerance of +0.25 inches
• Square tolerance of +0.010 to 0.015 inches for consistent cross-section geometry
• Annealed flat stock ready for machining and finish grinding prior to hardening

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock bar suitable for general toolmaking and die-making applications where AISI A2 material specification is required.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate metalworking equipment. Heat treating to final hardness should follow established AISI A2 heat treatment guidelines and should be performed by a qualified heat treating facility or experienced toolroom personnel. Always use proper personal protective equipment when cutting or grinding tool steel. Ensure all machining operations are complete before hardening to final working hardness.