DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened introduction
Hardenable austenitic high temperature steel with addition of B to increase high temperature strength, the creep behaviour and the neutrons absorption.
High temperature strength up to 650 °C, resistance to scaling up to 750 °C.
Application: for nuts and screws, steam and gas turbines, in the chemicals industry for high loaded parts like screws, shafts, spindles, valves and in the reactor manufacturing
Equivalent material: DIN X7CrNiMoBNb16-16, DIN 1.4986, EN X7CrNiMoBNb16-16, EN 1.4986
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened general
| Property | Temperature | Value |
|---|---|---|
| Density | 20.0 °C | Density of 7.97 - 8.01 g/cm³ |
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
| Coefficient of thermal expansion | -100.0 °C | Coefficient of thermal expansion of 1.49E-5 1/K | - |
| - | 20.0 °C | Coefficient of thermal expansion of 1.61E-5 1/K | - |
| - | 100.0 °C | Coefficient of thermal expansion of 1.67E-5 - 1.76E-5 1/K | - |
| - | 200.0 °C | Coefficient of thermal expansion of 1.72E-5 - 1.77E-5 1/K | - |
| - | 300.0 °C | Coefficient of thermal expansion of 1.77E-5 - 1.79E-5 1/K | - |
| - | 400.0 °C | Coefficient of thermal expansion of 1.79E-5 - 1.81E-5 1/K | - |
| - | 500.0 °C | Coefficient of thermal expansion of 1.79E-5 - 1.84E-5 1/K | - |
| - | 600.0 °C | Coefficient of thermal expansion of 1.81E-5 - 1.88E-5 1/K | - |
| - | 700.0 °C | Coefficient of thermal expansion of 1.83E-5 - 1.91E-5 1/K | - |
| - | 800.0 °C | Coefficient of thermal expansion of 1.86E-5 - 1.94E-5 1/K | - |
| - | 900.0 °C | Coefficient of thermal expansion of 1.97E-5 1/K | - |
| - | 1000.0 °C | Coefficient of thermal expansion of 2E-5 1/K | - |
| Max service temperature, long | - | Max service temperature, long of 0 - 750 °C | - |
| Melting point | - | Melting point of 1230 - 1480 °C | Typical for Austenitic Stainless Steel |
| Specific heat capacity | -100.0 °C | Specific heat capacity of 440 J/(kg·K) | - |
| - | 20.0 °C | Specific heat capacity of 460 - 472 J/(kg·K) | - |
| - | 100.0 °C | Specific heat capacity of 487 J/(kg·K) | - |
| - | 200.0 °C | Specific heat capacity of 503 J/(kg·K) | - |
| - | 300.0 °C | Specific heat capacity of 512 J/(kg·K) | - |
| - | 400.0 °C | Specific heat capacity of 520 J/(kg·K) | - |
| - | 500.0 °C | Specific heat capacity of 530 J/(kg·K) | - |
| - | 600.0 °C | Specific heat capacity of 541 J/(kg·K) | - |
| - | 700.0 °C | Specific heat capacity of 551 J/(kg·K) | - |
| - | 800.0 °C | Specific heat capacity of 559 J/(kg·K) | - |
| - | 900.0 °C | Specific heat capacity of 565 J/(kg·K) | - |
| - | 1000.0 °C | Specific heat capacity of 571 J/(kg·K) | - |
| Thermal conductivity | 20.0 °C | Thermal conductivity of 13.5 - 15 W/(m·K) | - |
| - | 100.0 °C | Thermal conductivity of 14.9 - 20 W/(m·K) | - |
| - | 200.0 °C | Thermal conductivity of 16.7 - 20 W/(m·K) | - |
| - | 300.0 °C | Thermal conductivity of 18.3 - 19 W/(m·K) | - |
| - | 400.0 °C | Thermal conductivity of 19 - 19.8 W/(m·K) | - |
| - | 500.0 °C | Thermal conductivity of 21 - 21.3 W/(m·K) | - |
| - | 600.0 °C | Thermal conductivity of 22 - 22.7 W/(m·K) | - |
| - | 700.0 °C | Thermal conductivity of 24 - 24.2 W/(m·K) | - |
| - | 800.0 °C | Thermal conductivity of 25 - 25.6 W/(m·K) | - |
| Thermal diffusivity | 20.0 °C | Thermal diffusivity of 3.6 mm²/s | - |
| - | 100.0 °C | Thermal diffusivity of 3.7 mm²/s | - |
| - | 200.0 °C | Thermal diffusivity of 4 mm²/s | - |
| - | 300.0 °C | Thermal diffusivity of 4.4 mm²/s | - |
| - | 400.0 °C | Thermal diffusivity of 4.6 mm²/s | - |
| - | 500.0 °C | Thermal diffusivity of 4.7 mm²/s | - |
| - | 600.0 °C | Thermal diffusivity of 4.9 mm²/s | - |
| - | 700.0 °C | Thermal diffusivity of 5.2 mm²/s | - |
| - | 800.0 °C | Thermal diffusivity of 5.5 mm²/s | - |
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened chemical
| Property | Value |
|---|---|
| Carbon | Carbon of 0.04 - 0.1 % |
| Chromium | Chromium of 15.5 - 17.5 % |
| Manganese | Manganese of 1.5 % |
| Molybdenum | Molybdenum of 1.6 - 2 % |
| Nickel | Nickel of 15.5 - 17.5 % |
| Phosphorus | Phosphorus of 0.05 % |
| Silicon | Silicon of 0.3 - 0.6 % |
| Sulfur | Sulfur of 0.03 % |
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened electrical
| Property | Temperature | Value |
|---|---|---|
| Electrical resistivity | 20.0 °C | Electrical resistivity of 7.75E-7 - 8.5E-7 Ω·m |
| - | 100.0 °C | Electrical resistivity of 8.42E-7 Ω·m |
| - | 200.0 °C | Electrical resistivity of 9.04E-7 Ω·m |
| - | 300.0 °C | Electrical resistivity of 9.62E-7 Ω·m |
| - | 400.0 °C | Electrical resistivity of 1.01E-6 Ω·m |
| - | 500.0 °C | Electrical resistivity of 1.06E-6 Ω·m |
| - | 600.0 °C | Electrical resistivity of 1.1E-6 Ω·m |
| - | 700.0 °C | Electrical resistivity of 1.13E-6 Ω·m |
| - | 800.0 °C | Electrical resistivity of 1.16E-6 Ω·m |
DIN 17240 Grade X8CrNiMoBNb16-16 hot work-hardened and age hardened mechanical
| Property | Temperature | Value |
|---|---|---|
| Elastic modulus | -100.0 °C | Elastic modulus of 206 GPa |
| - | 20.0 °C | Elastic modulus of 196 - 197.57 GPa |
| - | 100.0 °C | Elastic modulus of 190 - 192 GPa |
| - | 200.0 °C | Elastic modulus of 182 - 186 GPa |
| - | 300.0 °C | Elastic modulus of 174 - 181 GPa |
| - | 400.0 °C | Elastic modulus of 166 - 174 GPa |
| - | 500.0 °C | Elastic modulus of 158 - 165 GPa |
| - | 600.0 °C | Elastic modulus of 150 - 157 GPa |
| - | 700.0 °C | Elastic modulus of 142 - 147 GPa |
| - | 800.0 °C | Elastic modulus of 134 GPa |
| Elongation | 20.0 °C | Elongation of 16 % |
| Poisson's ratio | 20.0 °C | Poisson's ratio of 0.28 [-] |
| Reduction of area | 20.0 °C | Reduction of area of 40 % |
| Shear modulus | 20.0 °C | Shear modulus of 77.3 GPa |
| Tensile strength | 20.0 °C | Tensile strength of 650 - 850 MPa |
| Yield strength Rp0.2 | 20.0 °C | Yield strength Rp0.2 of 500 MPa |
| - | 200.0 °C | Yield strength Rp0.2 of 432 MPa |
| - | 250.0 °C | Yield strength Rp0.2 of 412 MPa |
| - | 300.0 °C | Yield strength Rp0.2 of 393 MPa |
| - | 350.0 °C | Yield strength Rp0.2 of 372 MPa |
| - | 400.0 °C | Yield strength Rp0.2 of 353 MPa |
| - | 450.0 °C | Yield strength Rp0.2 of 334 MPa |
| - | 500.0 °C | Yield strength Rp0.2 of 314 MPa |
| - | 550.0 °C | Yield strength Rp0.2 of 284 MPa |
| - | 600.0 °C | Yield strength Rp0.2 of 255 MPa |
| - | 650.0 °C | Yield strength Rp0.2 of 206 MPa |
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