What is the composition of ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel?

Published composition ranges are not available for ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel in this record. The source entry did not carry a verified composition.

What standards cover ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel?

The governing standards for ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel include ASTM A387/A387M, UNS K21590. Mill certificates typically call out the most specific AMS or ASTM number applicable to the product form.

How do I verify a mill certificate for ASTM A387 Grade 22 Chromium-Molybdenum Alloy 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.

ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel

Q: What is ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel used for?

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

UNS K21590 low_alloy_steel

Validate composition

Quick answer

ASTM A387 Grade 22 Chromium-Molybdenum Alloy Steel is a low alloy steel specified by ASTM A387/A387M, UNS K21590. Typical composition: .

A chromium-molybdenum alloy steel plate specifically designed for welded boilers and pressure vessels intended for elevated temperature service. Grade 22 is characterized by its 2.25% chromium and 1.00% molybdenum content, providing excellent high-temperature strength and corrosion resistance.

Applicable Standards

ASTM A387/A387M
UNS K21590

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