Starrett 57524 A2 Tool Steel Flat Stock 1/4x1/2x18 in

Product Description

The STARRETT 57524 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require consistent dimensions and tight tolerances out of the box. Measuring 0.25 inches thick, 0.5 inches wide, and 18 inches long, this flat stock ships in a ready-to-machine condition. AISI A2 tool steel offers good wear resistance and dimensional stability through the heat-treat cycle, making it a reliable choice for punches, dies, gauges, and similar tooling components. Shipping weight is 0.64 pounds.

This flat stock is suited for tool and die shops, maintenance departments, and prototype fabrication environments where precision blanks are needed before hardening. The 18-inch length provides sufficient stock for multiple short tooling pieces or a single longer component. Its flat-ground surfaces reduce setup time at the surface grinder and mill, and the pre-specified tolerances allow machinists to plan material removal with confidence before heat treatment.

Key Features

• AISI A2 air-hardening tool steel for good wear resistance and minimal distortion during heat treat
• Thickness: 0.25 inches with a tolerance of plus or minus 0.001 inches
• Width: 0.5 inches with a tolerance of plus 0.000 to 0.005 inches
• Length: 18 inches with a tolerance of plus 0.250 inches
• Square tolerance held to plus or minus 0.001 inches for consistent geometry
• Lightweight at 0.64 pounds, easy to handle and store at the bench

Compatibility

Designed as a standard-dimension A2 tool steel flat stock blank suitable for general tooling, die-making, and precision machining applications requiring air-hardening material.

Installation Notes

Machining and heat treatment of tool steel should be performed by qualified toolmakers or machinists familiar with AISI A2 material requirements. Always follow appropriate shop safety practices when cutting, grinding, or heat-treating tool steel, including the use of proper PPE and ventilation. Consult the material specification for recommended hardening temperatures and quench procedures before processing. Secure workpieces firmly before any material removal operation.