Starrett 54620 A2 Tool Steel Flat Stock 0.25x1x18 in

Product Description

The STARRETT 54620 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who require a precision-ground blank for punches, dies, gauges, and cutting tools. Manufactured to AISI A2 specification, this flat stock measures 0.25 inches thick, 1 inch wide, and 18 inches long with a weight of 1.27 pounds. Thickness and squareness tolerances are held to plus or minus 0.001 inches, and width tolerance is held to plus 0.000 to plus 0.005 inches, making it suitable for applications where close dimensional control matters before heat treatment.

A2 tool steel is a general-purpose air-hardening grade that balances wear resistance, toughness, and dimensional stability during hardening. This flat stock is commonly used in tool and die shops, maintenance machining environments, and production facilities where blanks are rough-machined, hardened, and finish-ground to final dimension. It is appropriate for both small-batch prototype tooling and production die components in light to medium-duty applications.

Key Features

• AISI A2 air-hardening tool steel for good wear resistance and dimensional stability during heat treatment
• Thickness held to plus or minus 0.001 inches for consistent stock removal planning
• Width tolerance of plus 0.000 to plus 0.005 inches provides a predictable starting envelope
• Squareness tolerance of plus or minus 0.001 inches reduces setup time on surface grinders
• 18-inch length with a plus 0.250-inch length tolerance gives adequate material for facing cuts
• Single-piece packaging with no minimum order quantity above one piece

Compatibility

Designed as a standard A2 air-hardening tool steel flat bar suitable for machining into punches, dies, gauges, fixture components, and similar tooling applications where AISI A2 specification material is required.

Installation Notes

Cutting, grinding, and heat treating tool steel should be performed by a qualified toolmaker or machinist familiar with air-hardening steel procedures. Appropriate personal protective equipment including eye protection and heat-resistant gloves is required during any cutting or thermal operations. Follow the material supplier hardening and tempering guidelines for AISI A2 steel to achieve target hardness without cracking. Allow the workpiece to reach ambient temperature before taking final dimensional measurements.