What is the composition of O1 Oil-Hardening Cold Work Tool Steel?

Published composition ranges are not available for O1 Oil-Hardening Cold Work Tool Steel in this record. PARTIAL - parsed from a truncated 500-char source excerpt; the element set is INCOMPLETE and must NOT be used for validation, specification or purchasing

What standards cover O1 Oil-Hardening Cold Work Tool Steel?

The governing standards for O1 Oil-Hardening Cold Work Tool Steel include AISI O1, ASTM A681. Mill certificates typically call out the most specific AMS or ASTM number applicable to the product form.

What is O1 Oil-Hardening Cold Work Tool Steel used for?

This alloy is used in applications demanding the property set described in its family: tool_steel.

How do I verify a mill certificate for O1 Oil-Hardening Cold Work Tool Steel?

Compare each element value on the certificate against the min/max ranges in the spec table above. Paste the values into the SpecBase validator to get an automated pass/fail check.

O1 Oil-Hardening Cold Work Tool Steel

UNS T31501 tool_steel

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Quick answer

O1 Oil-Hardening Cold Work Tool Steel is a tool steel specified by AISI O1, ASTM A681. Typical composition: .

O1 tool steel is an oil-hardening, cold work tool steel known for its good wear resistance, toughness, and dimensional stability during heat treatment. It is a versatile grade for general purpose tooling.

Applicable Standards

AISI O1
ASTM A681

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