Starrett 57216 A2 Tool Steel Flat Stock 3/4x2x18 in

Product Description

The STARRETT 57216 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a reliable pre-cut blank for punches, dies, gauges, and similar precision tooling. Manufactured from AISI A2 tool steel, this flat stock measures 3/4 inches thick, 2 inches wide, and 18 inches long. Tolerances are held to +0.010 to 0.015 inches on thickness, width, and squareness, and +0.250 inches on length. The piece ships at approximately 7.65 pounds. A2 steel offers good dimensional stability during air-hardening heat treatment, making it a common choice where distortion control after hardening matters.

This flat stock is suited for job shop and tool room environments where technicians rough-machine the blank to near-net shape before hardening and finish-grinding to final dimensions. Typical applications include custom punch and die blanks, form tools, fixture components, and wear plates. The 18-inch length provides useful stock for multiple smaller blanks or a single longer component. It is sold as a single piece with a minimum order quantity of one.

Key Features

• AISI A2 air-hardening tool steel for low distortion during heat treatment
• Thickness: 3/4 inches with +0.010 to 0.015 inch tolerance
• Width: 2 inches with +0.010 to 0.015 inch tolerance
• Length: 18 inches with +0.250 inch tolerance
• Squareness tolerance held to +0.010 to 0.015 inches
• Ships as a single pre-cut flat stock bar ready for machining

Compatibility

Designed as a general-purpose A2 tool steel flat stock blank suitable for use in job shop, tool room, and die shop applications requiring AISI A2 air-hardening material in a 3/4 x 2 x 18 inch form factor.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists familiar with AISI A2 specifications. Follow applicable shop safety practices when cutting, grinding, or hardening this material. Heat treatment, including austenitizing and air-quench hardening, should reference the material manufacturer's published data sheet for proper temperature ranges and soak times. Proper personal protective equipment is required during all machining and heat treatment operations.