Starrett 54615 A2 Tool Steel Flat Stock 3/16x3x18 in

Product Description

The STARRETT 54615 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 3/16 inch thick, 3 inches wide, and 18 inches long, this flat stock is manufactured to tight dimensional tolerances: plus or minus 0.001 inch on thickness and square, plus 0.000 to 0.005 inch on width, and plus 0.250 inch on length. AISI Type A2 tool steel offers good wear resistance, moderate toughness, and stable dimensional performance through the air-hardening heat treatment process. Machinists, tool and die makers, and maintenance shops stock this material for custom tooling, jigs, fixtures, and wear plates.

This flat stock is suited for job shop and production environments where precision ground or saw-ready stock is needed. Typical applications include punch and die components, forming tools, gauges, and fixture components requiring a hardenable steel with predictable size control. The 18-inch length is a common cut for bench-scale toolroom use. This piece ships as a single bar and is well suited for one-off tooling or small-batch fabrication work.

Key Features

• AISI Type A2 air-hardening tool steel — good dimensional stability during heat treat
• Thickness tolerance of plus or minus 0.001 inch for precise fitment
• Width tolerance of plus 0.000 to 0.005 inch
• Square tolerance of plus or minus 0.001 inch
• Length tolerance of plus 0.250 inch
• Ready-to-machine flat stock form — no additional milling required for most toolroom applications

Compatibility

Designed as a standard AISI A2 air-hardening tool steel flat bar suitable for general toolroom, die, and fixture fabrication where A2 material specification is required.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool and die makers using appropriate coolant and tooling rated for hardened or semi-hardened steel. Heat treatment of A2 steel requires controlled atmosphere or vacuum furnace equipment to achieve specified hardness — consult material data for austenitizing temperature and quench procedure. Always wear appropriate PPE when cutting or grinding tool steel. Deburr all edges before handling or fitting into assemblies.