1.4462 belongs to the DUPLEX steel family. This steel has a higher corrosion resistance than, for example the austenitic 1.4404. As a result the tensile yield point is around 150% higher.
The use of non-rusting DUPLEX steels, especially 1.4462, has become popular due to the unique combination of corrosion resistance, stress cracking resistance, a high strength and tensile yield point.
1.4462 in use
This steel is ideal for the construction industry due to its high strength. The relatively low nickel content in comparison to conventional austenite also makes 1.4462 interesting from a financial viewpoint.
Assignment to current and older standards
- Designation according to DIN: x2 Cr Ni Mo N 22-5-3
- ASTM grade: S 31803 / S 32205
- EN: 1.4462
- ASME: Duplex
- AFNOR: X2CrNiMoN 22-5-3
- SIS: 2377
- UNS: S 31803
- Vd TÜV 418: 1.4462
Chemical composition reference analysis (as weight %)
|Cr||21 – 23|
|Mo||2,5 – 3,5|
|Ni||4,5 – 6,5|
|N||0,08 – 0,20|
Mechanical values at room temperature
|Tensile strength N/mm²||640 – 900|
|Tensile yield point Rp 0,2 N/mm²||≥ 450|
|Elongation at break A5 %||25|