Starrett 54152 O1 Tool Steel Flat Stock 0.5x1.5x18 in

Product Description

The STARRETT 54152 is an O1 oil-hardening tool steel flat stock bar used in toolmaking, die work, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 0.5 inches thick, 1.5 inches wide, and 18 inches long, and weighs 3.83 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications where dimensional consistency before hardening is critical. The bar ships in a single-piece package and is sized for direct use or further stock removal by machinists, tool and die makers, and metalworking shops.

O1 tool steel flat stock in this size range is commonly used to produce punches, dies, guides, fixtures, and gauging components in job shops and production tool rooms. The 18-inch length provides enough material for most small-to-medium tooling projects without requiring a full bar cut. Machinists working in both prototype and short-run production environments use this stock as a starting point for heat-treated tooling that requires good wear resistance and edge retention after oil quenching and tempering.

Key Features

• AISI Type O1 oil-hardening tool steel for consistent response to oil quench heat treatment
• Thickness tolerance of plus or minus 0.001 inches for dimensional accuracy before machining
• Length tolerance of plus 0.250 inches, minus 0 inches — stock runs long, never short
• Width tolerance of 0.000 to minus 0.005 inches for controlled width dimensions
• Edge squareness held to 0.003 inches per inch across all edges
• Single-piece packaging with a minimum order quantity of 1

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat stock suitable for machining, grinding, and heat-treating operations in tool and die, fixture, and gauging applications.

Installation Notes

Machining and heat treatment of O1 tool steel should be performed by qualified toolmakers or machinists familiar with tool steel handling procedures. Always follow proper oil quenching and tempering procedures per the material specification to achieve target hardness. Use appropriate personal protective equipment when cutting or grinding. Consult applicable shop safety standards before performing heat treatment operations.