On this page 6 sections
What ASTM A335 covers
Standard at a glance
- Standard
- ASTM A335 / ASME SA335
- Issued by
- ASTM
- Product form
- Pipes
- Grades on site
- 6
Seamless Cr-Mo alloy steel pipe (P1, P5, P9, P11, P22, P91, P92 and others) for high-temperature service in power plants and refineries.
Key requirements
- Seamless only
- Annealed, or normalised and tempered, by grade
- Hardness tests on P91/P92
- Hydrostatic or NDE test
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A335
Ordering to ASTM A335
- State "ASTM A335" and the edition if your project requires it
- Grade / designation and product dimensions
- Supplementary requirements (tests, heat treatment, certification)
- Certificate type: EN 10204 3.1 or 3.2
Frequently asked questions
What does ASTM A335 cover?
Seamless Cr-Mo alloy steel pipe (P1, P5, P9, P11, P22, P91, P92 and others) for high-temperature service in power plants and refineries.
Which grades are covered by ASTM A335?
On this site: P1 / T1 (C-½Mo), P5 / T5 / Grade 5 (5Cr-½Mo), P9 / T9 / Grade 9 (9Cr-1Mo), P11 / T11 / Grade 11 (1¼Cr-½Mo), P22 / T22 / Grade 22 (2¼Cr-1Mo), P91 / T91 / Grade 91 (9Cr-1Mo-V).
Do you supply material certified to ASTM A335?
Yes. Material is supplied to ASTM A335 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA335 the same as ASTM A335?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-335). The adopted text is identical or includes stated modifications, and dual-certified material meets both.