Starrett 57538 A2 Tool Steel Flat Stock 0.5x1.75x18 in

Product Description

The STARRETT 57538 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who require close-tolerance raw material for cutting tools, punches, dies, and precision fixtures. Measuring 0.5 inches thick by 1.75 inches wide by 18 inches long, this flat stock is supplied to tight dimensional tolerances: thickness and squareness are held to plus or minus 0.001 inches, width is held to plus 0.000 to 0.005 inches, and length is held to plus 0.250 inches. A2 tool steel offers good toughness combined with moderate wear resistance and minimal distortion during air-hardening heat treatment, making it a reliable choice for general tooling applications.

This flat stock is suited for shop environments where precision tooling components are fabricated in-house. Typical applications include blanking dies, forming dies, gauges, bushings, and general precision tooling. The air-hardening characteristic of A2 reduces the risk of warping and cracking during heat treatment compared to oil-hardening grades, which makes it a practical choice for intricate or close-tolerance tool components. It is commonly stocked and used in tool and die shops, maintenance departments, and machine shops.

Key Features

• A2 air-hardening tool steel minimizes distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precise material removal calculations
• Width tolerance of plus 0.000 to 0.005 inches
• Length tolerance of plus 0.250 inches
• Squareness tolerance of plus or minus 0.001 inches ensures consistent cross-section geometry
• Ready-to-machine flat stock supplied in a single 18-inch length

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock suitable for fabrication of dies, punches, gauges, and precision tooling components in tool and die or machine shop environments.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists familiar with tool steel processing procedures. Follow the steel supplier and equipment manufacturer guidelines for preheat, hardening temperature, and tempering cycles specific to A2 material. Secure the workpiece properly before cutting or grinding operations. Always use appropriate personal protective equipment when machining or heat treating tool steel.