Starrett 57243 A2 Tool Steel Flat Stock 1/8x1/2x18 in

Product Description

The STARRETT 57243 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Measuring 0.125 inches thick, 0.5 inches wide, and 18 inches long, this flat stock is manufactured to tight dimensional tolerances: plus or minus 0.001 inches on thickness, plus or minus 0.001 inches on squareness, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. AISI A2 tool steel offers good dimensional stability during heat treatment and is a common choice where moderate toughness and wear resistance are required. The part weighs 0.32 pounds.

This flat stock is suited for fabricating punches, dies, gauges, form tools, and similar precision components in tool and die shops and machine shops. It is supplied in the annealed condition, ready for machining prior to hardening. Typical users include tool and die makers, machinists, and maintenance technicians requiring raw stock cut to a workable length for small-run tooling or replacement part fabrication.

Key Features

• AISI A2 air-hardening tool steel for good dimensional stability during heat treat
• Tight thickness tolerance of plus or minus 0.001 inches for precision fitment
• Width tolerance of plus 0.000 to 0.005 inches for consistent stock sizing
• Squareness tolerance of plus or minus 0.001 inches
• Compact 18-inch length suitable for small tooling and die components
• Lightweight at 0.32 pounds, easy to handle and fixture for machining

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat stock for use in toolmaking, die making, and precision machining applications requiring this material specification.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified tool and die makers or machinists familiar with tool steel handling procedures. Follow the steel manufacturer's recommended preheat, hardening, and tempering cycles for AISI A2 material. Always use appropriate personal protective equipment when grinding or machining tool steel. Consult applicable shop safety standards before cutting or heat treating.