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The STARRETT 57633 is an A2 air-hardening tool steel flat stock blank used in toolmaking, die making, and precision machining applications. Measuring 0.75 inches thick, 10 inches wide, and 18 inches long, this flat stock is supplied in an annealed condition ready for machining, grinding, and heat treatment. A2 tool steel offers good toughness combined with moderate wear resistance and low distortion during air-hardening, making it a reliable choice for blanks that require stable dimensional control through the hardening process. Thickness, width, and squareness tolerances are held to plus 0.010 to 0.015 inches, with a length tolerance of plus 0.25 inches.
This flat stock is suited for fabricating punches, dies, gauges, jigs, fixtures, and other precision tooling components in job shops, tool-and-die operations, and industrial maintenance environments. The 10-inch width and 18-inch length provide sufficient stock for a wide range of tooling blanks without excessive material waste. Licensed machinists, toolmakers, and die makers are the primary users of this material. It is also used in facilities where A2 is specified by engineering drawings calling out AISI A2 tool steel.
Designed as a standard AISI A2 air-hardening tool steel flat stock suitable for toolmaking and die-making applications where A2 material specification is required.
Cutting and machining of tool steel flat stock should be performed by qualified machinists using appropriate metalworking equipment. Carbide or bi-metal tooling is typically recommended when sawing or milling A2 tool steel. Heat treatment to final hardness should follow the material manufacturer's published A2 hardening and tempering procedures. Handle large flat stock sections carefully due to weight — this piece weighs approximately 38.13 pounds.
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