SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT)
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) introduction
The high temperature alloy steel 27NiCrMoV11-6 is used for larger preshaped components in the quenched and tempered condition in turbine and generator installations, in particular as shafts and discs.
The steel is weldable if the relevant measures required are observed.
Equivalent material: DIN 1.6948, EN 27NiCrMoV11-6, EN 1.6948
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 - 7.85 g/cm³ |
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) thermal
| Property |
Temperature |
Value |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.05E-5 1/K |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.15E-5 1/K |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.21E-5 1/K |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.27E-5 1/K |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.32E-5 1/K |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.4E-5 1/K |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.44E-5 1/K |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
| - |
20.0 °C |
Specific heat capacity of 461 J/(kg·K) |
| - |
100.0 °C |
Specific heat capacity of 479 J/(kg·K) |
| - |
200.0 °C |
Specific heat capacity of 499 J/(kg·K) |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
| - |
400.0 °C |
Specific heat capacity of 536 J/(kg·K) |
| - |
500.0 °C |
Specific heat capacity of 558 J/(kg·K) |
| - |
600.0 °C |
Specific heat capacity of 587 J/(kg·K) |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 33.7 W/(m·K) |
| - |
100.0 °C |
Thermal conductivity of 36.2 W/(m·K) |
| - |
200.0 °C |
Thermal conductivity of 37.8 W/(m·K) |
| - |
300.0 °C |
Thermal conductivity of 37.2 W/(m·K) |
| - |
400.0 °C |
Thermal conductivity of 35.7 W/(m·K) |
| - |
500.0 °C |
Thermal conductivity of 34 W/(m·K) |
| - |
600.0 °C |
Thermal conductivity of 32 W/(m·K) |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 9.4 mm²/s |
| - |
100.0 °C |
Thermal diffusivity of 9.4 mm²/s |
| - |
200.0 °C |
Thermal diffusivity of 9.2 mm²/s |
| - |
300.0 °C |
Thermal diffusivity of 8.5 mm²/s |
| - |
400.0 °C |
Thermal diffusivity of 7.6 mm²/s |
| - |
500.0 °C |
Thermal diffusivity of 6.6 mm²/s |
| - |
600.0 °C |
Thermal diffusivity of 5.4 mm²/s |
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.22 - 0.32 % |
| Chromium |
Chromium of 1.2 - 1.8 % |
| Manganese |
Manganese of 0.15 - 0.4 % |
| Molybdenum |
Molybdenum of 0.25 - 0.45 % |
| Nickel |
Nickel of 2.4 - 3.1 % |
| Phosphorus |
Phosphorus of 0.01 % |
| Silicon |
Silicon of 0.15 % |
| Sulfur |
Sulfur of 7E-3 % |
| Vanadium |
Vanadium of 0.05 - 0.15 % |
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 3.09E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 3.54E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 4.18E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 5.05E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 6.09E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 7.27E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.67E-7 Ω·m |
SEW 555 Grade 27NiCrMoV11-6 quenched and tempered (+QT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 11 - 13 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Steel |
| Reduction of area, transverse |
20.0 °C |
Reduction of area, transverse of 40 % |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 750 - 1050 MPa |
- |
| Yield strength Rp0.2 |
100.0 °C |
Yield strength Rp0.2 of 570 - 710 MPa |
- |
| - |
200.0 °C |
Yield strength Rp0.2 of 545 - 675 MPa |
- |
| - |
250.0 °C |
Yield strength Rp0.2 of 530 - 650 MPa |
- |
| - |
300.0 °C |
Yield strength Rp0.2 of 510 - 630 MPa |
- |
| - |
350.0 °C |
Yield strength Rp0.2 of 485 - 600 MPa |
- |
| - |
400.0 °C |
Yield strength Rp0.2 of 450 - 555 MPa |
- |
| - |
450.0 °C |
Yield strength Rp0.2 of 400 - 505 MPa |
- |
| - |
500.0 °C |
Yield strength Rp0.2 of 340 - 445 MPa |
- |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 600 - 750 MPa |
- |
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