Starrett 57672 A2 Tool Steel Flat Stock 2x2.5x18 Inches

Product Description

The STARRETT 57672 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Measuring 2 inches thick, 2-1/2 inches wide, and 18 inches long, this piece is cut to a finished size suitable for direct use in toolroom and fabrication work. The AISI A2 material designation indicates an air-hardening, cold-work tool steel known for its dimensional stability during heat treatment and its balanced combination of wear resistance and toughness. At 25.5 pounds, this is a substantial piece intended for heavy-duty tooling components such as dies, punches, gauges, and fixtures.

A2 flat stock of this size is commonly used in industrial toolrooms, mold shops, and precision machining facilities. It is suited for applications requiring a medium-to-large cross-section blank that can be machined to final geometry before or after hardening. Machinists and toolmakers select A2 for parts where predictable heat-treat distortion and good machinability in the annealed state are priorities. This bar is delivered in annealed condition, ready for layout, machining, and subsequent heat treatment to working hardness.

Key Features

• AISI A2 air-hardening cold-work tool steel for dimensional stability during heat treatment
• Finished dimensions: 2 inches thick, 2-1/2 inches wide, 18 inches long
• Tight thickness tolerance of +0.010 to 0.015 inches for predictable stock allowance
• Width tolerance of +0.010 to 0.015 inches and square tolerance of +0.010 to 0.015 inches
• Length tolerance of +0.25 inches
• Delivered in annealed condition, ready for machining

Compatibility

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

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists familiar with cold-work tool steel handling procedures. Always follow the material manufacturer's recommended annealing, machining, and hardening cycles for A2 steel. Appropriate personal protective equipment, including eye protection and gloves, is required when cutting or grinding tool steel. Heat treatment should be performed in a controlled-atmosphere or vacuum furnace to minimize decarburization.