EN 10272 Grade X1NiCrMoCuN25-20-7 Solution-Annealed Steel – High Corrosion Resistance & Strength
The austenitic steel grade X1NiCrMoCuN25-20-7 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessel. The material is the higher by Mo-alloyed option of 1.4539. The steel shows very high resistance to crevice corrosion, pitting as well as to pitting corrosion caused by stress corrosion. It has with 46 the highest steel interaction parameter (Pitting index). The material is resistant to intercrystalline corrosion (ic), also in welded condition. Application in higher chloride contaminated media, such as in appropriate sulfuric and phosphoric acid, furthermore in offshore technology facilities.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.76 - 8.1 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | -100.0 °C | 206 GPa | |
20.0 °C | 195 - 196 GPa | ||
100.0 °C | 190 GPa | ||
200.0 °C | 182 GPa | ||
300.0 °C | 174 GPa | ||
400.0 °C | 166 GPa | ||
500.0 °C | 158 GPa | ||
600.0 °C | 150 GPa | ||
700.0 °C | 142 GPa | ||
800.0 °C | 134 GPa | ||
900.0 °C | 127 GPa | ||
1000.0 °C | 120 GPa | ||
Elongation | 20.0 °C | 40 % | |
Elongation, transverse | 20.0 °C | 35 % | |
Hardness, Brinell | 20.0 °C | 250 [-] | |
Hardness, Brinell, trans | 20.0 °C | 250 [-] | |
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 | 650 - 850 MPa | |
100.0 °C | 610 MPa | ||
150.0 °C | 585 MPa | ||
200.0 °C | 560 MPa | ||
250.0 °C | 540 MPa | ||
300.0 °C | 525 MPa | ||
350.0 °C | 515 MPa | ||
400.0 °C | 510 MPa | ||
Tensile strength, transverse | 20.0 °C | 650 - 850 MPa | |
Yield strength Rp0.2 | 20.0 °C | 300 MPa | |
100.0 °C | 230 MPa | ||
150.0 °C | 210 MPa | ||
200.0 °C | 190 MPa | ||
250.0 °C | 180 MPa | ||
300.0 °C | 170 MPa | ||
350.0 °C | 165 MPa | ||
400.0 °C | 160 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 300 MPa | |
Yield strength Rp1.0 | 20.0 °C | 340 MPa | |
100.0 °C | 270 MPa | ||
150.0 °C | 245 MPa | ||
200.0 °C | 225 MPa | ||
250.0 °C | 215 MPa | ||
300.0 °C | 205 MPa | ||
350.0 °C | 195 MPa | ||
400.0 °C | 190 MPa | ||
Yield strength Rp1.0, transverse | 20.0 °C | 340 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.49E-5 1/K | |
20.0 °C | 1.61E-5 1/K | ||
100.0 °C | 1.58E-5 - 1.67E-5 1/K | ||
200.0 °C | 1.61E-5 - 1.72E-5 1/K | ||
300.0 °C | 1.65E-5 - 1.77E-5 1/K | ||
400.0 °C | 1.69E-5 - 1.81E-5 1/K | ||
500.0 °C | 1.73E-5 - 1.84E-5 1/K | ||
600.0 °C | 1.88E-5 1/K | ||
700.0 °C | 1.91E-5 1/K | ||
800.0 °C | 1.94E-5 1/K | ||
900.0 °C | 1.97E-5 1/K | ||
1000.0 °C | 2E-5 1/K | ||
Melting point | 1230 - 1480 °C | Typical for Austenitic Stainless Steel | |
Specific heat capacity | -100.0 °C | 440 J/(kg·K) | |
20.0 °C | 450 - 472 J/(kg·K) | ||
100.0 °C | 487 J/(kg·K) | ||
200.0 °C | 503 J/(kg·K) | ||
300.0 °C | 512 J/(kg·K) | ||
400.0 °C | 520 J/(kg·K) | ||
500.0 °C | 530 J/(kg·K) | ||
600.0 °C | 541 J/(kg·K) | ||
700.0 °C | 551 J/(kg·K) | ||
800.0 °C | 559 J/(kg·K) | ||
900.0 °C | 565 J/(kg·K) | ||
1000.0 °C | 571 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 11.9 - 12 W/(m·K) | |
100.0 °C | 13.3 W/(m·K) | ||
200.0 °C | 15.1 W/(m·K) | ||
300.0 °C | 16.7 W/(m·K) | ||
400.0 °C | 18.3 W/(m·K) | ||
500.0 °C | 19.8 W/(m·K) | ||
600.0 °C | 21.3 W/(m·K) | ||
700.0 °C | 22.8 W/(m·K) | ||
800.0 °C | 24.3 W/(m·K) | ||
900.0 °C | 25.7 W/(m·K) | ||
1000.0 °C | 27.1 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 3.3 mm²/s | |
100.0 °C | 3.4 mm²/s | ||
200.0 °C | 3.7 mm²/s | ||
300.0 °C | 4.1 mm²/s | ||
400.0 °C | 4.3 mm²/s | ||
500.0 °C | 4.5 mm²/s | ||
600.0 °C | 4.7 mm²/s | ||
700.0 °C | 5 mm²/s | ||
800.0 °C | 5.4 mm²/s | ||
900.0 °C | 5.7 mm²/s | ||
1000.0 °C | 5.8 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 9.59E-7 - 1E-6 Ω·m |
100.0 °C | 1.01E-6 Ω·m | |
200.0 °C | 1.05E-6 Ω·m | |
300.0 °C | 1.1E-6 Ω·m | |
400.0 °C | 1.13E-6 Ω·m | |
500.0 °C | 1.17E-6 Ω·m | |
600.0 °C | 1.19E-6 Ω·m | |
700.0 °C | 1.22E-6 Ω·m | |
800.0 °C | 1.24E-6 Ω·m | |
900.0 °C | 1.26E-6 Ω·m | |
1000.0 °C | 1.28E-6 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.02 % |
Chromium | 19 - 21 % |
Copper | 0.5 - 1.5 % |
Manganese | 1 % |
Molybdenum | 6 - 7 % |
Nickel | 24 - 25 % |
Nitrogen | 0.15 - 0.25 % |
Phosphorus | 0.03 % |
Silicon | 0.5 % |
Sulfur | 0.01 % |
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