Starrett 56504 A2 Tool Steel Flat Stock 1x1.5x18 in

Product Description

The STARRETT 56504 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, die makers, and machinists who require tight dimensional tolerances and consistent stock material. Manufactured to AISI A2 specification, this flat stock measures 1 inch thick, 1-1/2 inches wide, and 18 inches long, with a weight of 7.56 pounds. Thickness and squareness tolerances are held to +/- 0.001 inch, width tolerance runs +0.000 to +0.005 inch, and length tolerance is +0.250 inch. A2 tool steel offers good toughness, moderate wear resistance, and air-hardening characteristics that reduce distortion during heat treatment.

This flat stock is suited for fabricating punches, dies, gauges, jigs, and other precision tooling components in job shop, tool room, and production machining environments. The 18-inch length provides enough material for most single-component tooling applications without requiring additional parting. Its air-hardening designation makes it a practical choice when minimal dimensional change after hardening is a priority. Licensed machinists and tool and die makers are the primary users of this material.

Key Features

• AISI A2 air-hardening tool steel — minimal distortion during heat treat
• Thickness tolerance: +/- 0.001 inch for precise stock removal planning
• Width tolerance: +0.000 to +0.005 inch
• Square tolerance: +/- 0.001 inch
• Length tolerance: +0.250 inch
• Ready-to-machine flat stock condition — no additional straightening typically required

Compatibility

Designed as a general-purpose A2 tool steel flat stock for use in tool room and die-making applications where AISI A2 air-hardening material is specified.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified toolmakers or machinists following established shop practices. Secure workpieces properly before cutting or grinding operations. A2 tool steel is air-hardened — quenching in oil or water is not appropriate for this grade. Follow applicable material safety guidelines when grinding or machining tool steel to control airborne particulates.