Starrett 57543 A2 Tool Steel Flat Stock 1/8x3/4x18 in

Product Description

The STARRETT 57543 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who need precision-ground stock ready for layout, fabrication, or heat treatment. Sized at 0.125 inches thick, 0.75 inches wide, and 18 inches long, this flat stock ships at a weight of 0.48 pounds. A2 tool steel offers good wear resistance and dimensional stability through the air-hardening process, making it a reliable choice for punches, dies, gauges, and general toolroom applications where consistent geometry and predictable heat-treat response are required.

This flat stock is suited for toolroom and job-shop environments where stock is cut, ground, or machined to final dimensions before or after hardening. It is commonly used in the fabrication of cutting tools, forming dies, wear plates, and precision fixtures. The 18-inch length provides sufficient material for most single-component tooling applications without excessive waste. AISI A2 material specification applies throughout.

Key Features

• AISI A2 air-hardening tool steel for stable, low-distortion heat treatment
• Thickness: 0.125 inches with a tolerance of +0.010 to +0.015 inches
• Width: 0.75 inches with a tolerance of +0.010 to +0.015 inches
• Length: 18 inches with a tolerance of +0.25 inches
• Square tolerance: +0.010 to +0.015 inches for consistent geometry
• Ready for machining, grinding, or direct heat treatment as received

Compatibility

Designed as a general-purpose A2 tool steel flat stock suitable for toolroom fabrication, die making, and precision machining applications requiring AISI A2 material specification.

Installation Notes

A2 tool steel flat stock is worked by qualified machinists, toolmakers, and die makers using conventional metal-cutting and grinding equipment. Follow established shop safety practices when cutting or grinding tool steel, including appropriate eye and respiratory protection. Heat treatment should be performed by personnel familiar with AISI A2 hardening and tempering procedures. Consult applicable material data sheets for specific thermal processing parameters before hardening.