On this page 5 sections
What ASTM A923 covers
Standard at a glance
- Standard
- ASTM A923
- Issued by
- ASTM
- Grades on site
- 2
Test methods that screen duplex and super duplex products for sigma and other intermetallic phases that reduce toughness and corrosion resistance. Method A is a metallographic etch, Method B a Charpy impact test and Method C a ferric chloride corrosion test.
Key requirements
- Method A: sodium hydroxide etch screening
- Method B: Charpy impact test at −40 °C
- Method C: ferric chloride corrosion test
- Specified on the order or by the product specification
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A923
Ordering to ASTM A923
- State "ASTM A923" 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 A923 cover?
Test methods that screen duplex and super duplex products for sigma and other intermetallic phases that reduce toughness and corrosion resistance. Method A is a metallographic etch, Method B a Charpy impact test and Method C a ferric chloride corrosion test.
Which grades are covered by ASTM A923?
On this site: Duplex 2205, Super Duplex 2507.
Do you supply material certified to ASTM A923?
Yes. Material is supplied to ASTM A923 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA923 the same as ASTM A923?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-923). The adopted text is identical or includes stated modifications, and dual-certified material meets both.