Starrett 57631 A2 Tool Steel Flat Stock 0.75x6x18 in

Product Description

The STARRETT 57631 is an A2 air-hardening tool steel flat stock blank used in toolmaking, die making, and precision machining applications. Measuring 0.75 inches thick, 6 inches wide, and 18 inches long, this flat stock is manufactured to close dimensional tolerances that support accurate layout and minimal stock removal before finishing. A2 tool steel offers good wear resistance and dimensional stability during air hardening, making it a reliable choice for punches, dies, gauges, and other toolroom components. Licensed machinists, tool and die makers, and industrial maintenance technicians work with this material regularly.

This flat stock is suited for job shops, maintenance departments, and toolrooms that fabricate or repair cutting tools, forming dies, and precision fixtures. The A2 grade is commonly selected when moderate toughness and good wear resistance are required together, and when oil-quench distortion must be minimized. The 0.75 by 6 by 18 inch size provides enough material for medium-sized tooling blanks without excess waste.

Key Features

• A2 air-hardening tool steel grade for reduced distortion during heat treatment compared to oil-hardening grades
• Thickness: 0.75 inches with a tolerance of +0.010 to 0.015 inches
• Width: 6 inches with a tolerance of +0.010 to 0.015 inches
• Length: 18 inches with a tolerance of +0.25 inches
• Square tolerance held to +0.010 to 0.015 inches for consistent layout reference
• Supplied as a single flat stock blank, ready for machining or grinding to final dimensions

Compatibility

Designed as a general-purpose A2 tool steel flat stock blank suitable for toolroom fabrication of punches, dies, gauges, and precision fixtures requiring air-hardening tool steel.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified machinists using appropriate coolant and tooling rated for hardened or semi-hardened steel. Heat treatment should follow the A2 tool steel specification for austenitizing temperature and air-cool procedure — consult a qualified heat treater or the material specification for proper cycle parameters. Always wear appropriate PPE when cutting, grinding, or handling steel stock. Secure the workpiece properly before any machining operation.