On this page 6 sections
What ASTM A789 covers
Standard at a glance
- Standard
- ASTM A789 / ASME SA789
- Issued by
- ASTM
- Product form
- Tubes
- Grades on site
- 2
Duplex and super duplex stainless tubing for general corrosive service, including heat exchangers and hydraulic/instrument tubing.
Key requirements
- Solution annealed and quenched
- Hardness limits
- Hydrostatic or electric test
- Flattening and flaring tests
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A789
Ordering to ASTM A789
- State "ASTM A789" 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 A789 cover?
Duplex and super duplex stainless tubing for general corrosive service, including heat exchangers and hydraulic/instrument tubing.
Which grades are covered by ASTM A789?
On this site: Duplex 2205, Super Duplex 2507.
Do you supply material certified to ASTM A789?
Yes. Material is supplied to ASTM A789 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA789 the same as ASTM A789?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-789). The adopted text is identical or includes stated modifications, and dual-certified material meets both.