Starrett 57192 A2 Tool Steel Flat Stock 3/8x4x18 in

Product Description

The STARRETT 57192 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.375 inches thick, 4 inches wide, and 18 inches long, it is ground to close tolerances and supplied in an annealed condition ready for machining before heat treatment. A2 tool steel offers good dimensional stability during air hardening, making it a preferred choice for punches, dies, gauges, and cutting tools where tight post-heat distortion is a priority. This flat stock is handled and installed by tool and die makers, machinists, and fabricators working in production or job shop environments.

This flat stock is suited for fabricating precision tooling components in both production and custom shop settings. The 18-inch length provides a practical starting blank for cutting multiple smaller blanks or machining a single longer component. The 4-inch width accommodates a wide range of die plate and punch holder profiles without requiring additional welding or joining. A2 material specification meets AISI Type A2 standards, making it appropriate for applications requiring moderate toughness combined with good wear resistance after hardening.

Key Features

• AISI Type A2 air-hardening tool steel for stable, low-distortion heat treatment
• Thickness tolerance of +0.010 to 0.015 inches for consistent stock removal planning
• Width tolerance of +0.010 to 0.015 inches
• Square tolerance of +0.010 to 0.015 inches
• Length tolerance of +0.25 inches
• Ready-to-machine annealed flat stock in a single-piece package quantity

Compatibility

Designed as a standard AISI A2 tool steel flat stock blank suitable for use in conventional milling, grinding, and EDM operations prior to air-hardening heat treatment.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified tool and die makers or machinists familiar with tooling alloys. All cutting, grinding, and finishing operations should be completed before hardening. Use appropriate personal protective equipment when cutting or grinding tool steel. Follow the material supplier and applicable shop safety guidelines for handling, storing, and heat-treating tool steel stock.