Starrett 54604 A2 Tool Steel Flat Stock 5/32x2-1/2x18 in

Product Description

The STARRETT 54604 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, fixture building, and precision machining applications. Sized at 5/32 inches thick, 2-1/2 inches wide, and 18 inches long, this flat stock is held to tight dimensional tolerances, including plus or minus 0.001 inches on thickness and squareness. A2 tool steel offers a good balance of wear resistance, toughness, and dimensional stability through the air-hardening heat treatment process. Machinists, tool and die makers, and maintenance technicians use this stock to fabricate punches, dies, gauges, and similar precision components.

This flat stock is suited for both job shop and production toolroom environments where close-tolerance blanks are required. The 18-inch length provides enough material for a range of small-to-medium tooling blanks without excessive waste. The controlled width and thickness tolerances reduce the amount of finish grinding needed before the workpiece enters the heat treat cycle. AISI A2 material is commonly specified for cold-work tooling where moderate impact resistance and good dimensional stability during hardening are priorities.

Key Features

• AISI A2 air-hardening tool steel for stable, predictable heat treatment response
• Thickness held to plus or minus 0.001 inches tolerance
• Width tolerance of plus 0.000 to 0.005 inches for consistent stock removal planning
• Length tolerance of plus 0.250 inches allows full usable length after squaring
• Squareness tolerance of plus or minus 0.001 inches reduces setup time
• Ready-to-machine flat stock condition suitable for direct layout and machining

Compatibility

Designed as a standard A2 tool steel flat stock blank for cold-work tooling, die making, and precision fixture fabrication applications where AISI A2 air-hardening material is specified.

Installation Notes

Machining and grinding of A2 tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate cutting fluids and tooling rated for tool steel. Heat treatment, including hardening and tempering, should follow established metallurgical procedures for AISI A2 and should be performed by personnel familiar with tool steel heat treatment practice. Always allow the workpiece to reach ambient temperature before taking final measurements to ensure dimensional accuracy.