Starrett 57663 A2 Tool Steel Flat Stock 1-1/4x6x18 in

Product Description

The STARRETT 57663 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a reliable pre-cut blank ready for finishing and heat treatment. Measuring 1-1/4 inches thick, 6 inches wide, and 18 inches long, this flat stock ships in an annealed condition with tight dimensional tolerances: +0.010 to 0.015 inches on thickness, width, and squareness, and +0.25 inches on length. A2 tool steel offers a balanced combination of wear resistance and toughness, making it a widely used choice for dies, punches, gauges, and precision tooling components.

This flat stock is suited for machine shops, tool and die operations, and industrial maintenance environments where custom tooling is fabricated in-house. Because the blank arrives with close tolerances on all critical dimensions, it is ready for surface grinding, milling, or EDM work with minimal stock removal required. The 18-inch length provides sufficient material for multiple small tools or a single large die component. It is appropriate for both job shops and in-plant toolrooms handling medium- to high-production tooling demands.

Key Features

• A2 air-hardening tool steel (AISI Type A2) for dimensional stability during heat treatment
• Tight thickness tolerance of +0.010 to 0.015 inches reduces grinding stock allowance
• Width and squareness tolerances of +0.010 to 0.015 inches support accurate layout and machining
• Length tolerance of +0.25 inches provides a consistent saw-cut allowance
• Pre-cut 1-1/4 inches x 6 inches x 18 inches blank eliminates rough sawing from bar stock
• Suitable for dies, punches, gauges, forming tools, and precision jig components

Compatibility

Designed as a general-purpose A2 tool steel flat blank for use in any tool and die or machining application requiring AISI A2 air-hardening material in a 1-1/4 inches x 6 inches x 18 inches profile.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists familiar with air-hardening steels. The steel should be stress-relieved after rough machining and before finish grinding to minimize distortion. Always follow the material manufacturer's published heat treatment guidelines for austenitizing temperature, soak time, and air-cool procedure. Proper eye and hand protection is required during all cutting, grinding, and handling operations.