What grade of stainless steel is 1.4462?
Jan 12, 2026
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What grade of stainless steel is 1.4462?
1.4462 is a popular duplex stainless steel, also known by its American designations UNS S31803 or the more optimized UNS S32205, and is known for its high strength, corrosion resistance (especially pitting), and its dual-phase austenitic-ferritic structure. It offers superior performance to 304/316 grades, making it ideal for demanding environments in chemical, oil & gas, and marine industries.
What is 1.4462 material equivalent to?
DIN 1.4462 is a duplex stainless steel based upon a 22% chromium content. It can also be referred to as UNS S31803 (ASTM A182 F51) or UNS S32205 (ASTM A182 F60) when supplied as solid bar.
what is 1.4462 stainless steel be used?
Duplex stainless steels are typically used in:
~ Chemical processing, transport and storage
~ Oil and gas exploration and offshore rigs
~ Oil and gas refining
~ Marine environments
~ Pollution control equipment
~ Pulp & paper manufacturing
~ Chemical process plant
1.4462 stainless steel Chemical Composition
| Chemical Element | % Present |
|---|---|
| Carbon (C) | 0.0 - 0.03 |
| Chromium (Cr) | 21.00 - 23.00 |
| Manganese (Mn) | 0.0 - 2.00 |
| Silicon (Si) | 0.0 - 1.00 |
| Phosphorous (P) | 0.0 - 0.03 |
| Sulphur (S) | 0.0 - 0.02 |
| Nickel (Ni) | 4.50 - 6.50 |
| Nitrogen (N) | 0.10 - 0.22 |
| Molybdenum (Mo) | 2.50 - 3.50 |
| Iron (Fe) | Balance |
1.4462 stainless steel mechanical properties
| Mechanical properties (Solution annealed) | |||||||||
| Country (Region) | Standard | Steel Grade (Steel Number) | Diameter (d) or Thickness (t) in mm | Hardness (HB), ≤ | 0.2% proof strength (MPa), ≥ | Tensile strength (MPa) | Elongation, % (Longitudinal) | Impact energy, KV2, J (long.), ≥ | Resistance to intergranular corrosion |
| European Union | EN 10088-3 | X2CrNiMoN22-5-3 (1.4462) | ≤160 | 270 | 450 | 650-880 | 25 | 100 | Yes |
1.4462 stainless steel physical properties
| Physical Property | Value |
|---|---|
| Density | 7.805 g/cm³ |
| Thermal Expansion | 13.7 x10^-6 /K |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 19.0 W/m.K |
| Electrical Resistivity | 0.85 x10^-6 Ω .m |
Corrosion Resistance
Duplex 2205 stainless steels are extremely corrosion resistant. They have high resistance to intergranular corrosion. Even in chloride and sulphide environments, duplex stainless steels exhibit very high resistance to stress corrosion cracking.
Heat Resistance
The high chromium content of duplex 2205 stainless steels that protects against corrosion, causes embrittlement at temperatures over about 300°C.
At low temperatures duplex stainless steels have better ductility than the ferritic and martensitic grades. Duplex grades can readily be used down to at least -50°C.
Is 1.4462 stainless steel magnetic?
Yes, 1.4462 stainless steel (also known as Duplex 2205) is magnetic, unlike many common austenitic stainless steels, because it has a mixed ferritic-austenitic microstructure with a significant ferritic component. This magnetism is a key characteristic that helps differentiate it from non-magnetic types like 304 or 316 stainless steel.
What is the difference between 1.4462 and 1.4410?
Duplex steels are divided into two groups: Standard-Duplex (z.B. 1.4462): Is the most common option, with over 20% chromium, around 5% nickel and around 3% molybdenum. Super-Duplex (z.B. 1.4410 und 1.4501): Suitable for demanding applications, has a higher chromium content, nickel content and molybdenum.
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