Starrett 57664 A2 Tool Steel Flat Stock 1.5x1.5x18 in

Product Description

The STARRETT 57664 is an A2 air-hardening tool steel flat stock bar measuring 1.5 inches thick, 1.5 inches wide, and 18 inches long. A2 tool steel is an air-hardening, cold-work die steel known for its dimensional stability during heat treatment and good wear resistance. This flat stock serves as raw material for fabricating dies, punches, gauges, and tooling components. It ships in a precision-ground condition with tight tolerance control on all faces. Machinists, tool-and-die makers, and metalworking shops use this material as a starting blank before hardening and finishing to final dimensions.

This flat stock is suited for tool rooms and job shops producing cold-work tooling, fixtures, and precision components. The 1.5 inch by 1.5 inch cross section and 18 inch length make it a practical blank for short-run die work or prototype tooling. A2 material is commonly selected when dimensional stability after heat treat is a priority over maximum hardness. It performs well in applications where moderate toughness and wear resistance are required together.

Key Features

• 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
• Length tolerance of +0.25 inches
• Square tolerance of +0.010 to 0.015 inches across the bar section
• Ships as a single 18-inch bar ready for layout and machining

Compatibility

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

Installation Notes

Cutting, grinding, and heat treatment of tool steel should be performed by qualified machinists or tool-and-die makers using appropriate personal protective equipment. Follow the material manufacturer's recommended austenitizing and quench procedures for A2 steel. Secure the bar properly in a vise or fixture before machining to prevent movement. Allow the material to reach ambient temperature before taking final dimensional measurements after any thermal operation.