Starrett 57213 A2 Tool Steel Flat Stock 0.75x0.75x18 in

Product Description

The STARRETT 57213 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who require a reliable, dimensionally consistent blank for cutting tools, punches, dies, and fixtures. Measuring 0.75 inches thick, 0.75 inches wide, and 18 inches long, this flat stock is supplied in the annealed condition and is designed to be machined to final shape before air-hardening heat treatment. AISI A2 tool steel offers good dimensional stability during hardening, moderate toughness, and wear resistance suited to a wide range of tooling applications. The bar weighs approximately 2.87 pounds.

This flat stock is used in tool rooms, die shops, and maintenance departments in both industrial and commercial settings. Typical applications include fabricating blanking dies, form tools, gauges, and cutting blades where close dimensional control of the stock material reduces machining allowance. Tradespeople and machinists working in precision fabrication, mold making, and general tooling specify A2 flat stock for its predictable heat-treat response and consistent pre-machined dimensions.

Key Features

• AISI A2 air-hardening tool steel construction for stable, low-distortion heat treatment
• 0.75 inches thick by 0.75 inches wide cross-section, ready for layout and machining
• 18-inch length provides sufficient blank material for most tooling applications
• Thickness tolerance of +0.010 to +0.015 inches for consistent stock removal planning
• Width tolerance of +0.010 to +0.015 inches maintains square cross-section accuracy
• Length tolerance of +0.25 inches allows for facing and squaring to final length

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock blank suitable for use wherever A2 grade tooling material is specified in tool room and die shop applications.

Installation Notes

Machining of A2 tool steel flat stock should be performed by qualified machinists or toolmakers using appropriate cutting speeds and tooling for tool steel. Material should be stress-relieved or annealed as required before finish machining. Heat treatment, including hardening and tempering, must follow established thermal processing procedures for AISI A2 and should be performed by personnel familiar with tool steel heat treatment practices. Handle bar stock carefully to avoid surface damage that could affect finished tool dimensions.