On this page 6 sections
What ASTM A350 covers
Standard at a glance
- Standard
- ASTM A350 / ASME SA350
- Issued by
- ASTM
- Product form
- Flanges
- Grades on site
- 1
Forged flanges and fittings for low-temperature service, including LF2 Class 1 (impact tested at −46 °C) and LF3 (3½% Ni).
Key requirements
- Charpy impact testing at specified temperature
- Normalised or quenched and tempered
- Hardness limits
- Matched with A333 pipe
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A350
Ordering to ASTM A350
- State "ASTM A350" 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 A350 cover?
Forged flanges and fittings for low-temperature service, including LF2 Class 1 (impact tested at −46 °C) and LF3 (3½% Ni).
Which grades are covered by ASTM A350?
On this site: ASTM A333 Grade 6.
Do you supply material certified to ASTM A350?
Yes. Material is supplied to ASTM A350 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA350 the same as ASTM A350?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-350). The adopted text is identical or includes stated modifications, and dual-certified material meets both.