EN 1.4462 (2205 Duplex): European Standard for Offshore Structural Stainless
EN 10088-3 · Published: 2026-06-03 · Updated: July 2026
EN 1.4462 is the European designation for 2205 duplex stainless steel — the most widely used duplex grade. It delivers roughly twice the yield strength of 316L with superior chloride stress corrosion cracking resistance, making it the standard...
EN 1.4462 is the European designation for 2205 duplex stainless steel — the most widely used duplex grade. It delivers roughly twice the yield strength of 316L with superior chloride stress corrosion cracking resistance, making it the standard material for North Sea offshore platform piping, chemical tanker cargo tanks, and desalination evaporator shells.
Quick Facts
| Category | Stainless Steel |
| Standard | EN 10088-3 |
| Density | 7.80 g/cm³ |
| Yield Strength | 450 MPa |
| Tensile Strength | 680-880 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| UNS S32205 | Compare |
| SAF 2205 | Compare |
| URANUS 45N | Compare |
| JIS SUS329J3L | Compare |
Related Materials
🧮 Material Weight Calculator
Calculate the weight based on this material's density: 7.80 g/cm³
Frequently Asked Questions
What welding consumables are used for 2205 duplex?
Use over-alloyed filler metals (typically 22.8.3L or 25.10.4L) with 2-3% higher nickel than the base metal. This compensates for the ferrite-promoting effect of rapid weld cooling, ensuring the weld metal achieves the target 40-60% ferrite balance. Pure autogenous welding (no filler) typically produces excessive ferrite (>70%) with reduced toughness and corrosion resistance.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu