Starrett 54569 A2 Tool Steel Flat Stock 3/16x1-1/2x36 in

Product Description

The STARRETT 54569 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Manufactured from AISI A2 tool steel, this flat stock measures 3/16 inches thick, 1-1/2 inches wide, and 36 inches long, with a shipping weight of 3.3 pounds. The A2 designation indicates an air-hardening alloy known for its dimensional stability during heat treatment, reduced distortion, and good wear resistance. Thickness tolerance is held to plus or minus 0.001 inches, making this stock suitable for applications where close dimensional control is required before and after hardening.

This flat stock is used by tool and die makers, machinists, and maintenance professionals in job shops, production facilities, and toolrooms. It is commonly cut, ground, and machined into punches, dies, gauges, knives, and custom tooling components. The 36-inch length provides practical working stock for a range of part sizes. Width tolerance runs from plus 0.000 to plus 0.005 inches, and length tolerance is plus 0.25 inches, consistent with industry standards for precision ground flat stock.

Key Features

• AISI A2 air-hardening tool steel for reduced distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precise stock sizing
• Width tolerance of plus 0.000 to plus 0.005 inches
• Squareness held to 0.003 inches per inch on all edges
• Length tolerance of plus 0.25 inches on 36-inch bar
• Consistent cross-section suitable for grinding to final dimension

Compatibility

Designed as a general-purpose A2 air-hardening tool steel flat stock suitable for fabrication of punches, dies, blades, gauges, and custom tooling components where air-hardening alloy steel is specified.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate tooling for hardened or pre-hardened steel. When heat treating, follow the material manufacturer recommendations for A2 steel austenitizing and air-quench procedures to achieve target hardness. Always use appropriate personal protective equipment when cutting or grinding tool steel stock. Verify final dimensions after any heat treatment cycle, as minor movement may occur even with air-hardening alloys.