Value Collection OR05.0X3 O-1 Tool Steel Round 5x3 in

Product Description

The VALUE COLLECTION OR05.0X3 is a decarb-free O-1 oil-hardening tool steel round bar intended for toolmaking, die work, and precision machining applications. It measures 5 inches in diameter and 3 inches in overall length, weighing 18.1 pounds. O-1 tool steel is a general-purpose oil-hardening grade valued for its dimensional stability during heat treatment and its ability to hold a sharp edge after hardening. The decarb-free condition means the outer surface has not lost carbon content, allowing machinists and toolmakers to machine directly to finished dimensions without removing an allowance layer for decarburization. This bar ships at stock length with a length tolerance of plus 0.250 to minus 0.000 inches.

This round bar is suited for fabricating punches, dies, gauges, jigs, and cutting tools in job shop, tool room, and industrial maintenance environments. The 5-inch diameter makes it appropriate for larger die blanks and fixture components where mass and cross-sectional strength matter. Machinists working in precision tool and die, mold making, or general metalworking will find the decarb-free surface condition reduces prep steps before final machining. It is typically processed on lathes, mills, or surface grinders before hardening and tempering.

Key Features

• Decarb-free surface condition allows machining directly to finished size without decarburization allowance
• O-1 oil-hardening grade offers good dimensional stability and edge retention after heat treat
• 5 inch diameter by 3 inch overall length suits large die blanks and fixture stock
• Diameter tolerance of plus 0.025 to plus 0.085 inches over nominal for consistent fit in tooling layouts
• Weight per foot of 70.10 pounds supports load and mass calculations for tooling design
• Stock length format with plus 0.250 to minus 0.000 inch length tolerance

Compatibility

Designed as a standard O-1 oil-hardening tool steel round bar suitable for tool room and die shop applications requiring a decarb-free, oversized-diameter starting blank at 5 inches diameter.

Installation Notes

Handling and machining of tool steel rounds requires standard metalworking equipment including lathes and milling machines rated for alloy steel. Secure the workpiece properly in a chuck or fixture before cutting to avoid movement under load. Heat treatment — including hardening and tempering — should follow established metallurgical procedures for O-1 tool steel and be performed by qualified personnel. Eye protection and appropriate PPE are required during all machining and heat treating operations.