Starrett 54719 A2 Tool Steel Flat Stock 5/16x1.5x18 in

Product Description

The STARRETT 54719 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who need a precision-ground, ready-to-heat-treat blank. Measuring 5/16 inches thick, 1-1/2 inches wide, and 18 inches long, this bar ships to close dimensional tolerances: thickness and square held to plus or minus 0.001 inches, width held to plus 0.000 to 0.005 inches, and length to plus 0.250 inches. A2 tool steel offers good toughness and moderate wear resistance, and it air-hardens cleanly with minimal distortion compared to oil-hardening grades, making it a practical choice for punches, dies, gauges, and cutting tools.

This flat stock is suited for job shops, maintenance tool rooms, and production die shops working in both light industrial and heavy manufacturing environments. It is typically used as raw material for fabricating custom tooling components that will be machined to final dimension, then heat treated in-house or sent to a commercial heat treater. The 18-inch length accommodates a wide range of tooling layouts without requiring initial cutoff on most bench-scale projects.

Key Features

• A2 air-hardening tool steel minimizes distortion during heat treatment compared to oil-hardening grades
• Thickness tolerance held to plus or minus 0.001 inches for consistent stock removal planning
• Width tolerance of plus 0.000 to 0.005 inches ensures predictable fit in mating fixtures
• Square tolerance of plus or minus 0.001 inches supports accurate layout and machining setups
• 18-inch length with a plus 0.250-inch length tolerance provides usable material for multiple tooling applications
• Single-piece minimum order quantity allows procurement of exact quantities without overstock

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock blank suitable for machining into punches, dies, gauges, form tools, and similar tooling components where moderate wear resistance and air-hardening characteristics are required.

Installation Notes

Machining and heat treatment of A2 tool steel should be performed by qualified machinists or tool and die makers familiar with high-carbon alloy steels. Secure the workpiece firmly in a vise or fixture before any cutting, grinding, or drilling operations. Heat treatment should follow the material specification for A2 tool steel, including proper austenitizing, air-quench, and double-temper cycles. Allow the bar to reach ambient temperature before taking final dimensional measurements.