Duplex 2205 (UNS S32205): High-Strength Corrosion-Resistant Edelstahl
ASTM A789/A790 · Published: 2026-06-03 · Updated: July 2026
Duplex 2205 has a mixed austenite-ferrite microstructure that delivers approximately twice the yield strength of 304/316 while offering superior chloride stress corrosion cracking resistance. It is the standard material for offshore oil & gas...
Duplex 2205 hat ein mixed austenite-ferrite microstructure das delivers approximately twice der yield strength von 304/316 while offering superior chloride stress corrosion cracking widerstand. Es ist der standard material für offshore öl & gas piping, chemical tankers, und desalination plants.
Quick Facts
| Kategorie | Edelstahl |
| Norm | ASTM A789/A790 |
| Density | 7.80 g/cm³ |
| Yield Strength | 450 MPa |
| Tensile Strength | 655 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
Was ist der temperature limitation von Duplex 2205?
Duplex 2205 ist rated für continuous service von -50°C zu 300°C. Über 300°C, der ferrite phase undergoes spinodal decomposition (475°C embrittlement), reducing toughness. Es sollte nicht sein used über 300°C für pressure-containing applications ohne spezifisch qualification.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu