EN 10222-5 X3CrNiMo18-12-3 – Solution Annealed Stainless Steel, Ideal for Pressure Vessels
The corrosion resistant material X3CrNiMo18-12-3, material number 1.4449 is predominantly used for pressure vessel construction.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 200 GPa | |
100.0 °C | 194 GPa | ||
200.0 °C | 186 GPa | ||
300.0 °C | 179 GPa | ||
400.0 °C | 172 GPa | ||
500.0 °C | 165 GPa | ||
Elongation | 20.0 °C | 40 - 45 % | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Austenitic Stainless Steel |
Shear modulus | 23.0 °C | 77 GPa | Typical for Austenitic Stainless Steel |
Tensile strength | 20.0 °C | 520 - 720 MPa | |
Yield strength Rp0.2 | 20.0 °C | 220 MPa | |
Yield strength Rp1.0 | 20.0 °C | 255 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.6E-5 1/K | |
200.0 °C | 1.65E-5 1/K | ||
300.0 °C | 1.7E-5 1/K | ||
400.0 °C | 1.75E-5 1/K | ||
500.0 °C | 1.8E-5 1/K | ||
Melting point | 1230 - 1480 °C | Typical for Austenitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 500 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 15 W/(m·K) | |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 7.5E-7 Ω·m |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.035 % |
Chromium | 17 - 18.2 % |
Copper | 1 % |
Manganese | 2 % |
Molybdenum | 2.25 - 2.75 % |
Nickel | 11.5 - 12.5 % |
Nitrogen | 0.08 % |
Phosphorus | 0.05 % |
Silicon | 1 % |
Sulfur | 0.015 % |
Metal
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- EN 10222-5 Grade X7CrNiNb18-10 – Solution-Annealed Stainless Steel for Corrosion‑Resistant Pressure Vessels
- EN 10222‑5 X6CrNiTiB18‑10 Solution‑Annealed Steel for High‑Temperature Applications
- EN 10222-5 Grade X2CrNiMoN17-11-2 – Solution Annealed Steel with Enhanced Corrosion Resistance
- EN 10222-5 X5CrNiMo17-12-2: Solution-Annealed Austenitic Steel for Chemical & Pharmaceutical Use
- EN 10222-5 Grade X6CrNi18-10 (Solution Annealed + AT): High‑Temperature Austenitic Steel for Reactor, Boiler, and Chemical Applications
- EN 10222-5 X6CrNiNb18-10 – Solution Annealed Steel with Superior Corrosion Resistance
- EN 10222-5 Grade X2CrNiMo17-12-2 – Solution Annealed Steel for High-Performance Corrosion Resistance