Starrett 57673 A2 Tool Steel Flat Stock 2x3x18 in

Product Description

The STARRETT 57673 is an A2 air-hardening tool steel flat stock bar measuring 2 inches thick, 3 inches wide, and 18 inches long. A2 tool steel is a versatile, oil- and air-hardening alloy known for its dimensional stability during heat treatment and good wear resistance, making it a go-to choice for dies, punches, gauges, and precision tooling applications. The bar ships in the annealed condition, ready for machining, grinding, and subsequent heat treatment. Machinists, tool-and-die makers, and industrial fabricators work with this material when tight tolerances and consistent cross-section are required across a finished tool or fixture.

This flat stock is suited for job shop and production toolroom environments where A2 tool steel is specified for cold-work tooling. Typical applications include blanking and forming dies, trim dies, slitting knives, master gages, and similar components that demand uniform hardening response and minimal distortion. The 2-inch by 3-inch cross-section provides substantial stock allowance for roughing, finishing, and grinding to final part dimensions.

Key Features

• AISI A2 air-hardening tool steel for low distortion during heat treatment
• Thickness tolerance of +0.010 to 0.015 inches for consistent cross-section
• Width tolerance of +0.010 to 0.015 inches
• Square tolerance of +0.010 to 0.015 inches
• Length tolerance of +0.25 inches
• Ready for machining, grinding, EDM, and heat treat in the annealed condition

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat bar intended for use in cold-work tooling, die making, and precision machining applications where A2 material specification is required.

Installation Notes

Cutting and machining of tool steel flat stock should be performed using appropriate carbide or high-speed-steel tooling with adequate coolant to prevent work hardening at cut surfaces. Heat treatment of A2 tool steel must be performed by a qualified heat treater following established time and temperature guidelines for the alloy. Always allow material to reach ambient temperature before final inspection of dimensions. Personal protective equipment including eye protection and gloves is required when sawing, grinding, or handling raw stock.