Starrett 54670 A2 Tool Steel Flat Stock 0.5x6x36 in

Product Description

The STARRETT 54670 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. It measures 0.5 inches thick, 6 inches wide, and 36 inches long, and ships as a single bar. A2 tool steel is a mid-range air-hardening alloy known for its dimensional stability during heat treatment and good wear resistance. Thickness tolerance is held to plus or minus 0.001 inches, making this stock suitable for applications where close dimensional control is required before and after hardening. At 35.18 pounds, this is a full-length bar intended for professional shop use.

This flat stock is a standard choice for fabricating punches, dies, forming tools, gauges, and similar precision components in tool and die shops, industrial maintenance departments, and machine shops. The 36-inch length provides sufficient stock for multiple pieces on most medium-sized tooling projects. A2 material is typically selected when better toughness than D2 is needed while still achieving good hardness after air-quench heat treatment.

Key Features

• A2 air-hardening tool steel — good dimensional stability through heat treat cycle
• Thickness tolerance: plus or minus 0.001 inches for consistent stock removal planning
• Width tolerance: plus 0.000 to 0.005 inches
• Length tolerance: plus 0.25 inches
• Square tolerance: plus or minus 0.001 inches; edge squareness held to 0.003 inches per inch
• Single bar per package, 35.18 pounds

Compatibility

Designed as a standard A2 air-hardening tool steel flat bar suitable for general tool and die fabrication, gauge making, and precision machining where an air-quench alloy tool steel is specified.

Installation Notes

Cutting and machining of tool steel flat stock should be performed by a qualified machinist or toolmaker using appropriate metalworking equipment. A2 steel should be annealed before machining if maximum machinability is required, and heat treatment should follow the material specification for A2 tool steel. Proper personal protective equipment is required when sawing, grinding, or machining. Consult the applicable heat treat specification before hardening.