EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N)
EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N) introduction
Seamless tubes of the high-temperature 8MoB5-4 are used in steam boiler and pipeline construction, pressure vessel and apparatus engineering, especially in chemical industry and power station construction at temperatures from approx. 200 °C to maximum 400 °C and simultaneously high pressures. The total load and the special scaling circumstances can decrease or increase the temperature limit.
Weldability is available.
Equivalent material: JIS STPA12, UNS K11522, ASTM P1, DIN 1.5450, DIN 8MoB5-4, EN 1.5450
EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N) general
| Property |
Temperature |
Value |
Comment |
| Density |
23.0 °C |
Density of 7.8 - 7.9 g/cm³ |
Typical for Molybdenum Steel |
EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
23.0 °C |
Coefficient of thermal expansion of 1.29E-5 1/K |
Typical for Molybdenum Steel |
| Max service temperature, long |
- |
Max service temperature, long of 200 - 550 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Molybdenum Steel |
| Specific heat capacity |
23.0 °C |
Specific heat capacity of 456 J/(kg·K) |
Typical for Molybdenum Steel |
| Thermal conductivity |
23.0 °C |
Thermal conductivity of 37 - 48 W/(m·K) |
Typical for Molybdenum Steel |
EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N) chemical
| Property |
Value |
| Aluminium |
Aluminium of 0.06 % |
| Boron |
Boron of 2E-3 - 6E-3 % |
| Carbon |
Carbon of 0.06 - 0.1 % |
| Chromium |
Chromium of 0.2 % |
| Copper |
Copper of 0.3 % |
| Manganese |
Manganese of 0.6 - 0.8 % |
| Molybdenum |
Molybdenum of 0.4 - 0.5 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.1 - 0.35 % |
| Sulfur |
Sulfur of 0.01 - 0.02 % |
| Titanium |
Titanium of 0.06 % |
EN 10216-2 Grade 8MoB5-4 normalized or normalized formed (+N) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 200 - 215 GPa |
Typical for Molybdenum Steel |
| Elongation |
20.0 °C |
Elongation of 19 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 17 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Molybdenum Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 540 - 690 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 540 - 690 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 400 MPa |
- |
| - |
100.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
150.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
200.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
250.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
300.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
350.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| - |
400.0 °C |
Yield strength Rp0.2 of 368 MPa |
- |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 400 MPa |
- |
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