EN 10272 X2CrNiMoN22-5-3 Austenitic-Ferritic Steel – Solution Annealed (+AT) for Pressure Vessels
The austenitic-ferritic steel grade X2CrNiMo23-5-3 acc. to DIN EN 10272 : 2001-01 is used for hot and cold formed rods for pressure vessels. The material shows high resistance to stress corrosion in chlorid containing medis as well as favorable resistance to pitting and intercrystalline corrosion also in welded condition. The steel has favorable general resistance in many corrosive media such as organic and inorganic acids, resistance under acid gas conditions. Favorable warm and cold formability and weldability.
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General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.8 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 200 - 212 GPa | |
100.0 °C | 194 - 206 GPa | ||
200.0 °C | 186 GPa | ||
300.0 °C | 180 GPa | ||
Elongation | 20.0 °C | 25 % | |
Hardness, Brinell | 20.0 °C | 270 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Duplex Stainless Steel |
Shear modulus | 23.0 °C | 77 GPa | Typical for Duplex Stainless Steel |
Tensile strength | 20.0 °C | 650 - 880 MPa | |
100.0 °C | 590 MPa | ||
150.0 °C | 570 MPa | ||
200.0 °C | 550 MPa | ||
250.0 °C | 540 MPa | ||
Yield strength Rp0.2 | 20.0 °C | 450 MPa | |
100.0 °C | 360 MPa | ||
150.0 °C | 335 MPa | ||
200.0 °C | 315 MPa | ||
250.0 °C | 300 MPa | ||
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.3E-5 - 1.33E-5 1/K | |
200.0 °C | 1.35E-5 1/K | ||
300.0 °C | 1.4E-5 1/K | ||
Max service temperature | 300 °C | Typical for Duplex Stainless Steel | |
Melting point | 1375 - 1450 °C | Typical for Duplex Stainless Steel | |
Specific heat capacity | 20.0 °C | 500 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 13.4 - 15 W/(m·K) | |
100.0 °C | 14.9 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 7.85E-7 - 8E-7 Ω·m |
100.0 °C | 8.44E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.03 % |
Chromium | 21 - 23 % |
Manganese | 2 % |
Molybdenum | 2.5 - 3.5 % |
Nickel | 4.5 - 6.5 % |
Nitrogen | 0.1 - 0.22 % |
Phosphorus | 0.04 % |
Silicon | 1 % |
Sulfur | 0.015 % |
Metal
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