EN 10028-7 Grade X6CrNiMoNb17-12-2 – Solution Annealed Stainless Steel for High-Temperature Corrosion Resistance
The austenitic steel X6CrNiMoNb17-12-2 is comparable to 1.4571 regarding corrosion properties. Increased corrosion resistance to nonoxidizing acids and halogenated media. The material is resistant to intercrystalline corrosion even in sensitized condition. The steel is not mirror-polishable. It is permitted for pressure vessel engineering up to 300 °C. Up to 550 °C if there are no media causing intercrystalline attack. Application: in chemical apparatus engineering, in textile-, sulfite-, cellulose, fatty acid-, rubber and coloring industry
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.96 - 8 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | -100.0 °C | 206 GPa |
20.0 °C | 196 - 200 GPa | |
100.0 °C | 190 - 194 GPa | |
200.0 °C | 182 - 186 GPa | |
300.0 °C | 174 - 179 GPa | |
400.0 °C | 166 - 172 GPa | |
500.0 °C | 158 - 165 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 A80, transverse | 20.0 °C | 40 % |
Elongation, transverse | 20.0 °C | 40 % |
Poisson's ratio | 20.0 °C | 0.28 [-] |
Shear modulus | 20.0 °C | 77.01 GPa |
Tensile strength | 20.0 °C | 520 - 720 MPa |
50.0 °C | 490 MPa | |
100.0 °C | 440 MPa | |
150.0 °C | 410 MPa | |
200.0 °C | 390 MPa | |
250.0 °C | 385 MPa | |
300.0 °C | 375 MPa | |
350.0 °C | 375 MPa | |
400.0 °C | 375 MPa | |
450.0 °C | 370 MPa | |
500.0 °C | 360 MPa | |
550.0 °C | 330 MPa | |
Tensile strength, transverse | 20.0 °C | 520 - 720 MPa |
Yield strength Rp0.2 | 50.0 °C | 207 MPa |
100.0 °C | 185 MPa | |
150.0 °C | 177 MPa | |
200.0 °C | 167 MPa | |
250.0 °C | 157 MPa | |
300.0 °C | 145 MPa | |
350.0 °C | 140 MPa | |
400.0 °C | 135 MPa | |
450.0 °C | 131 MPa | |
500.0 °C | 129 MPa | |
550.0 °C | 127 MPa | |
Yield strength Rp0.2, transverse | 20.0 °C | 220 MPa |
Yield strength Rp1.0 | 50.0 °C | 244 MPa |
100.0 °C | 218 MPa | |
150.0 °C | 206 MPa | |
200.0 °C | 196 MPa | |
250.0 °C | 186 MPa | |
300.0 °C | 175 MPa | |
350.0 °C | 169 MPa | |
400.0 °C | 164 MPa | |
450.0 °C | 160 MPa | |
500.0 °C | 158 MPa | |
550.0 °C | 157 MPa | |
Yield strength Rp1.0, transverse | 20.0 °C | 260 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 | 1.65E-5 - 1.67E-5 1/K | ||
200.0 °C | 1.72E-5 - 1.75E-5 1/K | ||
300.0 °C | 1.77E-5 - 1.8E-5 1/K | ||
400.0 °C | 1.81E-5 - 1.85E-5 1/K | ||
500.0 °C | 1.84E-5 - 1.9E-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 | ||
Max service temperature, long | 0 - 550 °C | ||
Melting point | 1230 - 1480 °C | Typical for Austenitic Stainless Steel | |
Specific heat capacity | -100.0 °C | 440 J/(kg·K) | |
20.0 °C | 472 - 500 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 | 13.3 - 15 W/(m·K) | |
100.0 °C | 14.9 W/(m·K) | ||
200.0 °C | 16.5 W/(m·K) | ||
300.0 °C | 18.1 W/(m·K) | ||
400.0 °C | 19.5 W/(m·K) | ||
500.0 °C | 21 W/(m·K) | ||
600.0 °C | 22.4 W/(m·K) | ||
700.0 °C | 23.8 W/(m·K) | ||
800.0 °C | 25.2 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 3.5 mm²/s | |
100.0 °C | 3.8 mm²/s | ||
200.0 °C | 4 mm²/s | ||
300.0 °C | 4.3 mm²/s | ||
400.0 °C | 4.5 mm²/s | ||
500.0 °C | 4.7 mm²/s | ||
600.0 °C | 4.8 mm²/s | ||
700.0 °C | 5.1 mm²/s | ||
800.0 °C | 5.4 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 7.5E-7 - 7.91E-7 Ω·m |
100.0 °C | 8.45E-7 Ω·m | |
200.0 °C | 9.19E-7 Ω·m | |
300.0 °C | 9.77E-7 Ω·m | |
400.0 °C | 1.03E-6 Ω·m | |
500.0 °C | 1.08E-6 Ω·m | |
600.0 °C | 1.12E-6 Ω·m | |
700.0 °C | 1.15E-6 Ω·m | |
800.0 °C | 1.18E-6 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.08 % |
Chromium | 16.5 - 18.5 % |
Manganese | 2 % |
Molybdenum | 2 - 2.5 % |
Nickel | 10.5 - 13.5 % |
Niobium | 1 % |
Phosphorus | 0.05 % |
Silicon | 1 % |
Sulfur | 0.015 % |
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