Starrett 57526 A2 Tool Steel Flat Stock 1/4x1-3/4x18 in

Product Description

The STARRETT 57526 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, punch fabrication, and precision machining applications. Measuring 0.25 inches thick, 1.75 inches wide, and 18 inches long, this bar is held to tight dimensional tolerances: plus or minus 0.001 inches on thickness and square, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. AISI A2 tool steel offers excellent wear resistance and dimensional stability through the hardening process, making it a reliable choice for tool and die makers who need consistent stock to work from.

This flat stock is suited for shops producing stamping dies, forming tools, gauges, and cutting blades where air-hardening steel is specified. The 18-inch length provides workable stock for most bench and milling operations without requiring further rough cutting in many cases. It is appropriate for both production toolrooms and maintenance shops handling tool repair and fabrication work. Machinists and tool and die makers are the primary users of this material.

Key Features

• AISI A2 air-hardening tool steel for consistent hardness and dimensional stability after heat treat
• Thickness held to plus or minus 0.001 inches tolerance for precise stock sizing
• Width tolerance of plus 0.000 to 0.005 inches provides ready-to-use flat surfaces
• Square tolerance of plus or minus 0.001 inches supports accurate layout and machining setups
• 18-inch length with plus 0.250 inches length tolerance allows standard bench and mill work
• Weighs 2.23 pounds — suitable for single-piece handling at the bench

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat bar suitable for general toolmaking, die making, and precision fabrication applications where A2 material is specified.

Installation Notes

Machining, grinding, and heat treatment of tool steel should be performed by qualified tool and die makers or machinists familiar with A2 steel properties. Follow the steel manufacturer's recommended austenitizing and quench procedures for A2 material. Use appropriate cutting fluids and speeds when machining in the annealed state. Personal protective equipment including eye protection and gloves is required when cutting or grinding tool steel stock.