What standards cover ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe?

The governing standards for ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe include ASTM A335, UNS K91560. 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 A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe?

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 A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe

Q: What is the composition of ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe?

Published composition ranges are not available for ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe in this record. The source entry did not carry a verified composition.

Q: What is ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe used for?

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

UNS K91560 low_alloy_steel

Validate composition

Quick answer

ASTM A335 Grade P91 Chromium-Molybdenum-Vanadium Steel Pipe is a low alloy steel specified by ASTM A335, UNS K91560. Typical composition: .

A ferritic alloy steel pipe grade designed for high-temperature service, particularly in power generation and petrochemical industries, known for its excellent creep resistance and strength at elevated temperatures.

Applicable Standards

ASTM A335
UNS K91560

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