Starrett 57197 A2 Tool Steel Flat Stock 0.5x1x18 in

Product Description

The STARRETT 57197 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.5 inches thick, 1 inch wide, and 18 inches long, this flat stock is cut from AISI A2 tool steel, which offers good dimensional stability during heat treatment and strong wear resistance after hardening. Thickness, width, and square tolerances are held to +0.010 to 0.015 inches, while length tolerance is +0.25 inches. This bar is suited for machinists, toolmakers, and die makers who require consistent pre-hardened or ready-to-harden stock for fabricating punches, dies, gauges, and forming tools.

A2 air-hardening tool steel is a common choice in job shops, tool rooms, and industrial maintenance settings. Its air-quench hardening process reduces distortion compared to oil- or water-hardening grades, making it practical for components where dimensional control after heat treat is critical. This flat stock format allows direct milling, grinding, or EDM work before or after hardening. The 18-inch length provides enough material for multiple short tool blanks or a single long component.

Key Features

• AISI A2 air-hardening tool steel for reduced distortion during heat treatment
• 0.5 inches thick by 1 inch wide by 18 inches long flat bar format
• Thickness, width, and square tolerances of +0.010 to 0.015 inches for consistent fitment in precision applications
• Length tolerance of +0.25 inches
• Ready for machining, grinding, or EDM prior to or after hardening
• Ships as a single piece with a package quantity of 1

Compatibility

Designed as a standard AISI A2 tool steel flat stock suitable for toolmaking, die making, and precision machining applications requiring air-hardening grade material in flat bar form.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate cutting fluids and personal protective equipment. Heat treatment of A2 tool steel requires controlled furnace conditions and should follow the material manufacturer's published hardening and tempering parameters. Always allow the bar to reach ambient temperature before taking final measurements. Secure workpieces properly during all machining operations to prevent movement and injury.