Starrett 54631 A2 Tool Steel Flat Stock 0.25x6x18 in

Product Description

The STARRETT 54631 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Measuring 0.25 inches thick, 6 inches wide, and 18 inches long, this flat stock is produced to tight dimensional tolerances: plus or minus 0.001 inches on thickness, plus or minus 0.001 inches on squareness, plus 0.000 to 0.005 inches on width, and plus 0.250 inches on length. A2 tool steel offers good wear resistance and dimensional stability during air-hardening heat treatment, making it a reliable choice for toolroom and production environments. Machinists, tool-and-die makers, and metalworking shops are the primary users.

This flat stock is suited for fabricating punches, dies, forming tools, gauges, and similar precision toolroom components where consistent stock dimensions and predictable heat-treat response are required. Its annealed-condition delivery makes it machinable before hardening. The 0.25-inch thickness and 6-inch width provide a useful starting blank for a range of medium-to-large tooling profiles. Shops working to close final tolerances benefit from the tight thickness and squareness tolerances held at the stock level, reducing initial setup stock removal.

Key Features

• AISI A2 air-hardening tool steel — stable dimensions during heat treatment with good wear resistance
• Thickness tolerance of plus or minus 0.001 inches for consistent starting stock
• Width tolerance of plus 0.000 to 0.005 inches
• Squareness tolerance of plus or minus 0.001 inches
• Length tolerance of plus 0.250 inches
• Delivered in annealed condition for machinability prior to hardening

Compatibility

Designed as a general-purpose A2 tool steel flat stock for toolroom, die-making, and precision machining applications requiring air-hardening material in this size range.

Installation Notes

Cutting, grinding, and machining of tool steel flat stock should be performed by qualified machinists or tool-and-die makers using appropriate metalworking equipment. Secure the workpiece firmly before any cutting operation. Heat treatment of A2 tool steel should follow the material manufacturer's recommended thermal cycle; improper hardening or quenching can result in cracking or distortion. Always use appropriate personal protective equipment when machining or heat-treating tool steel.