Starrett 57549 A2 Tool Steel Flat Stock 0.125x2.5x18 in

Product Description

The STARRETT 57549 is an A2 air-hardening tool steel flat stock bar intended for toolmakers, machinists, and die makers who require a reliable, ready-to-machine blank. Measuring 0.125 inches thick, 2.5 inches wide, and 18 inches long, this flat stock ships in an annealed condition suitable for machining prior to heat treatment. AISI A2 tool steel offers good dimensional stability during air hardening and resists distortion through the hardening cycle, making it a practical choice for punches, dies, gages, and cutting tools. Weight is 1.6 pounds per piece.

This flat stock is used in job shops, tool rooms, and manufacturing environments where precision blanks are machined to finished tool geometry and then air hardened. The 18-inch length provides enough stock to yield multiple shorter tool blanks from a single piece. The ground flat finish and tight tolerances minimize preliminary grinding time before layout and machining operations begin.

Key Features

• AISI A2 air-hardening tool steel — stable dimensions through the hardening cycle
• Thickness: 0.125 inches with a tolerance of +0.010 to +0.015 inches
• Width: 2.5 inches with a tolerance of +0.010 to +0.015 inches
• Length: 18 inches with a tolerance of +0.25 inches
• Square tolerance: +0.010 to +0.015 inches
• Supplied in annealed condition for ease of machining prior to heat treat

Compatibility

Designed as a general-purpose A2 tool steel flat blank for use in tool and die applications requiring air-hardening steel stock in this size range.

Installation Notes

Machining and heat treatment of tool steel should be performed by a qualified machinist or tool and die maker familiar with AISI A2 specifications. All cutting, grinding, and drilling should be completed before the hardening cycle. Follow the steel manufacturer's recommended austenitizing and quench procedures for A2 tool steel. Appropriate PPE and ventilation are required during grinding and heat treatment operations.