Starrett 54789 A2 Tool Steel Flat Stock 1x2.5x18 in

Product Description

The STARRETT 54789 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who need a precision-ground blank ready for heat treatment. Manufactured to AISI A2 specification, this flat stock measures 1 inch thick by 2-1/2 inches wide by 18 inches long and holds a thickness tolerance of plus or minus 0.001 inches. The air-hardening designation means the steel reaches full hardness with minimal distortion during the heat-treat cycle, making it a reliable choice for punches, dies, gauges, and similar tooling components.

This flat stock is suited for tool and die shops, maintenance machining departments, and precision fabrication environments where tight dimensional control is required before and after hardening. The pre-cut 18-inch length reduces setup time when a specific blank length is needed. It is appropriate for both one-off tooling builds and small-batch production of cutting tools, forming dies, and wear components where A2 air-hardening steel is the specified material.

Key Features

• AISI A2 air-hardening tool steel construction for minimal distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for precise fitment without additional grinding
• Width tolerance of plus 0.000 to 0.005 inches for controlled stock removal planning
• Length tolerance of plus 0.250 inches ensures full usable length on every bar
• Square tolerance of plus or minus 0.001 inches supports accurate layout and machining setups
• Single-piece packaging with no minimum order beyond one unit

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock blank suitable for general tooling, die making, and precision machining applications where AISI A2 material specification is required.

Installation Notes

A2 tool steel flat stock is worked by qualified machinists and tool and die makers using conventional milling, grinding, and EDM equipment. Always follow the material manufacturer's recommended preheat, hardening, and tempering cycles for AISI A2 steel before placing hardened components into service. Handle bar stock with care to avoid nicks or surface damage that could initiate stress concentrations after hardening. Wear appropriate PPE when cutting, grinding, or heat-treating tool steel.