Starrett 54082 O1 Tool Steel Flat Stock 0.25x5x18 in

Product Description

The STARRETT 54082 is an O1 oil-hardening tool steel flat stock blank used in toolmaking, die making, jig fabrication, and precision machining applications. Manufactured to AISI Type O1 specifications, this flat stock measures 0.25 inches thick, 5 inches wide, and 18 inches long, with a weight of 6.38 pounds. Thickness tolerance is held to plus or minus 0.001 inches, and squareness is controlled to 0.003 inches per inch on all edges. O1 tool steel offers good machinability in the annealed state and responds well to oil-quench hardening, making it a reliable choice for producing punches, dies, gauges, and cutting tools.

This flat stock is suited for machine shops, tool and die operations, and maintenance facilities requiring precision-ground or saw-cut blanks in manageable lengths. The 18-inch length and 5-inch width provide enough material for multiple tool blanks from a single piece. It is typically worked by machinists, tool and die makers, and industrial maintenance technicians. The stock ships in an annealed condition ready for machining prior to heat treatment.

Key Features

• AISI Type O1 oil-hardening tool steel — good machinability before hardening
• Thickness tolerance of plus or minus 0.001 inches for precise fitment
• Width tolerance of 0.000 to minus 0.005 inches
• Length tolerance of plus 0.250 inches
• Squareness held to 0.003 inches per inch on all edges
• Single-piece package quantity — no minimum split required

Compatibility

Designed as a general-purpose O1 oil-hardening tool steel flat stock blank for toolmaking, die making, and precision machining applications requiring AISI Type O1 material in this thickness and width range.

Installation Notes

Machining and hardening of O1 tool steel should be performed by qualified machinists or tool and die makers familiar with heat-treat procedures for oil-hardening grades. The stock should be machined to near-final dimensions before oil-quench hardening. Follow the steel supplier heat-treatment guidelines for austenitizing temperature and quench procedure. Appropriate eye protection, gloves, and ventilation are required during any grinding or heat-treat operations.