Starrett 54622 A2 Tool Steel Flat Stock 0.25x1.5x18 in

Product Description

The STARRETT 54622 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. It ships in an annealed, ready-to-machine condition and is intended for heat treating after final shaping. This bar measures 0.25 inches thick, 1.5 inches wide, and 18 inches long, with a weight of 1.92 pounds. Tolerances are held tight: thickness and square tolerances are both plus or minus 0.001 inches, width tolerance is plus 0.000 to 0.005 inches, and length tolerance is plus 0.250 inches. Machinists, tool and die makers, and industrial maintenance professionals are the primary users of this material.

A2 tool steel is a general-purpose air-hardening grade known for its balance of wear resistance, toughness, and dimensional stability during heat treatment. This flat stock is well suited for punches, dies, gauges, shear blades, and other precision tooling components where consistent cross-section dimensions matter. The 18-inch length provides enough stock for most small-to-medium tooling blanks without excessive waste. The flat ground surfaces reduce setup time on mills, surface grinders, and EDM equipment.

Key Features

• AISI A2 air-hardening tool steel — stable dimensions during heat treat, good wear resistance
• Tight thickness tolerance of plus or minus 0.001 inches for precision tooling use
• Width tolerance held to plus 0.000 to 0.005 inches
• Square tolerance of plus or minus 0.001 inches across the cross-section
• Flat ground stock reduces secondary grinding time before machining
• Single-piece minimum order quantity for low-volume and prototype work

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock suitable for use in conventional toolmaking, die making, and precision machining workflows wherever AISI A2 material specification is called out.

Installation Notes

This material is supplied in an annealed condition and must be heat treated by a qualified heat treater or tool and die maker to develop full hardness. Standard machining and grinding practices for tool steel apply before hardening. Allow for dimensional change during heat treatment and finish-grind to final dimensions after hardening where tolerances are critical. Follow applicable shop safety procedures when grinding or machining tool steel stock.