Starrett 54705 A2 Tool Steel Flat Stock 1x3x36 in

Product Description

The STARRETT 54705 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Measuring 1 inch thick, 3 inches wide, and 36 inches long, this bar is ground to tight dimensional tolerances: plus or minus 0.001 inches on thickness and squareness, plus 0.000 to 0.005 inches on width, and plus 0.25 inches on length. A2 tool steel offers excellent wear resistance and dimensional stability through the hardening process, making it a reliable choice for punches, dies, gauges, and cutting tools. At 35.18 pounds, this is a full-length production bar intended for shop use by machinists and tool and die makers.

This flat stock is suited for job shops, toolrooms, and production facilities that fabricate precision tooling components. Typical applications include blanking dies, forming dies, trim dies, jig components, and wear plates where tight tolerances and consistent hardness response are required. The 36-inch length provides flexibility for layout and cutting to finished part dimensions. A2 air-hardening steel is commonly selected over O1 oil-hardening grades when reduced distortion during heat treatment is a priority.

Key Features

• A2 air-hardening tool steel per AISI material specification for consistent heat treatment response
• Thickness tolerance of plus or minus 0.001 inches for precise fit in tooling applications
• Width tolerance of plus 0.000 to 0.005 inches for controlled stock allowance
• Squareness tolerance of plus or minus 0.001 inches with edge squareness of 0.003 inches per inch
• Full 36-inch length with plus 0.25-inch length tolerance for flexible shop cutting
• Ground flat stock finish ready for layout, machining, or direct use as wear components

Compatibility

Designed as a standard A2 air-hardening tool steel flat bar suitable for use in toolmaking, die making, and general precision machining wherever AISI A2 material specification is required.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by qualified machinists using appropriate band saws, surface grinders, or milling equipment rated for tool steel. Heat treatment to full hardness requires controlled air-quench procedures per the A2 specification and should be performed by a qualified heat treat shop or experienced toolroom personnel. Always de-burr cut edges and handle with care to avoid surface damage that could affect final part tolerances. Follow applicable shop safety practices when grinding or machining hardened or pre-hardened steel.