What is the composition of AISI 4145 Chromium-Molybdenum Steel?

Published composition ranges are not available for AISI 4145 Chromium-Molybdenum 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 AISI 4145 Chromium-Molybdenum Steel?

The governing standards for AISI 4145 Chromium-Molybdenum Steel include AISI 4145, SAE J404, ASTM A29, UNS G41450. Mill certificates typically call out the most specific AMS or ASTM number applicable to the product form.

What is AISI 4145 Chromium-Molybdenum Steel used for?

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

How do I verify a mill certificate for AISI 4145 Chromium-Molybdenum 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.

AISI 4145 Chromium-Molybdenum Steel

UNS G41450 low_alloy_steel

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Quick answer

AISI 4145 Chromium-Molybdenum Steel is a low alloy steel specified by AISI 4145, SAE J404, ASTM A29, UNS G41450. Typical composition: .

AISI 4145 is a medium-carbon chromium-molybdenum alloy steel, similar to 4140 but with slightly higher carbon content for increased strength and hardenability. It is commonly used in the oil and gas industry.

Applicable Standards

AISI 4145
SAE J404
ASTM A29
UNS G41450

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