Starrett 54512 O1 Tool Steel Flat Stock 1x10x36 in

Product Description

The STARRETT 54512 is an O1 oil-hardening tool steel flat stock bar measuring 1 inch thick, 10 inches wide, and 36 inches long. O1 is an AISI-specified oil-hardening grade tool steel widely used in toolmaking, die making, and precision machining applications where controlled heat treatment and high hardness are required after hardening. This flat stock is supplied in the annealed condition, ready for machining to final dimensions before oil-quench hardening. The piece weighs 102 pounds. Thickness tolerance is held to plus or minus 0.001 inches, making it suitable for applications that demand tight dimensional control before heat treat.

This flat stock is used in tool and die shops, machine shops, and industrial fabrication environments. Typical applications include blanking dies, forming dies, punches, gauges, and custom tooling fixtures. The 1 inch thickness and 10 inch width make this a large-format bar suited to heavier tooling components. It is typically worked by skilled machinists or toolmakers using conventional milling, turning, or surface grinding equipment prior to hardening and tempering.

Key Features

• AISI Type O1 oil-hardening tool steel for predictable heat treat response
• Thickness tolerance of plus or minus 0.001 inches for precise pre-grind allowances
• Length tolerance of plus 0.015 inches, zero minus for reliable cut-to-length stock
• Width tolerance of 0.000 to minus 0.015 inches
• Edge squareness held to 0.003 inches per inch on all edges
• Large-format bar at 1 inch x 10 inches x 36 inches suits heavy die and tooling work

Compatibility

Designed as a standard AISI O1 oil-hardening tool steel flat stock suitable for toolmaking, die making, and precision machining applications requiring oil-quench heat treatment.

Installation Notes

Machining and hardening of tool steel flat stock should be performed by qualified toolmakers or machinists familiar with O1 heat treat procedures. Always follow appropriate shop safety protocols when cutting, grinding, or heat treating tool steel. Personal protective equipment including eye protection and heat-resistant gloves is required during hardening operations. Consult the material specification and your heat treat facility for proper austenitizing temperature, quench medium, and tempering guidelines specific to AISI O1.