Starrett 57204 A2 Tool Steel Flat Stock 0.5x6x18 in

Product Description

The STARRETT 57204 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a ground, precision-tolerance blank ready for heat treatment. Measuring 0.5 inches thick, 6 inches wide, and 18 inches long, this flat stock is produced to AISI A2 material specification with tight dimensional tolerances across all four faces. The thickness and width tolerances are held to +0.010 to 0.015 inches, length tolerance is +0.25 inches, and square tolerance is +0.010 to 0.015 inches. A2 tool steel offers good dimensional stability during air hardening, making it a preferred choice for punches, dies, blanking tools, and gauges.

This flat stock is suited to tool and die shops, maintenance machining operations, and industrial fabrication environments where A2 air-hardening steel is specified. Typical applications include cutting dies, forming dies, trim tools, and precision gauging fixtures. The 0.5-inch thickness and 6-inch width make this bar appropriate for medium to large die components that require stock removal prior to hardening and finish grinding. It ships in a single-piece package quantity.

Key Features

• AISI A2 air-hardening tool steel for good dimensional stability through the hardening cycle
• Thickness: 0.5 inches with +0.010 to 0.015 inches tolerance
• Width: 6 inches with +0.010 to 0.015 inches tolerance
• Length: 18 inches with +0.25 inches tolerance
• Square tolerance held to +0.010 to 0.015 inches
• Ready for machining, heat treatment, and finish grinding as received

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock for use in tool and die, punch and die, and precision machining applications where AISI A2 material specification is required.

Installation Notes

Machining and hardening of A2 tool steel should be performed by qualified toolmakers or machinists familiar with tool steel heat treatment procedures. Follow the steel supplier or AISI guidelines for preheat, austenitizing temperature, and air-quench cycles specific to A2 grade. Use appropriate personal protective equipment when cutting, grinding, or handling flat stock. Verify all dimensional requirements against finished part drawings before beginning machining operations.