EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT)
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) introduction
The steel 18MnMo4-5 is a heat-resistant alloy high-grade steel for application in pressure vessel construction.
Max. application temp.: 450 °C
Equivalent material: ASTM A302 Grade A, UNS K12021, IS 18MnMo4-5, DIN 1.5414, EN 1.5414, DIN 18MnMo4-5
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) general
| Property |
Value |
Comment |
| Density |
Density of 7.8 - 7.9 g/cm³ |
Typical for Molybdenum Steel |
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) thermal
| Property |
Value |
Condition |
Related Standards |
Shape |
Comment |
| Coefficient of thermal expansion |
Coefficient of thermal expansion of 1.29e-05 1/K |
- |
- |
- |
Typical for Molybdenum Steel |
| Max service temperature |
Max service temperature of 20 - 450 °C |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
Long |
| - |
Max service temperature of 450 °C |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
Long |
| Melting point |
Melting point of 1382 - 1529 °C |
- |
- |
- |
Typical for Molybdenum Steel |
| Specific heat capacity |
Specific heat capacity of 456 J/(kg·K) |
- |
- |
- |
Typical for Molybdenum Steel |
| Thermal conductivity |
Thermal conductivity of 37 - 48 W/(m·K) |
- |
- |
- |
Typical for Molybdenum Steel |
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) chemical
| Property |
Value |
Condition |
Related Standards |
Shape |
| Carbon |
Carbon of 0.2 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Chromium |
Chromium of 0.3 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Copper |
Copper of 0.3 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Manganese |
Manganese of 0.9 - 1.5 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Molybdenum |
Molybdenum of 0.45 - 0.6 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Nickel |
Nickel of 0.3 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Nitrogen |
Nitrogen of 0.012 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Phosphorus |
Phosphorus of 0.015 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Silicon |
Silicon of 0.4 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| Sulfur |
Sulfur of 0.005 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
| - |
Sulfur of 0.01 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) electrical
| Property |
Value |
Comment |
| Electrical conductivity |
Electrical conductivity of 5 S/m |
Predicted Value |
| Electrical resistivity |
Electrical resistivity of 35 Ω·m |
Predicted Value |
EN 10028-2 Grade 18MnMo4-5 quenched and tempered (+QT) mechanical
| Property |
Temperature |
Value |
Condition |
Related Standards |
Shape |
Comment |
| Elastic modulus |
- |
Elastic modulus of 200 - 215 GPa |
- |
- |
- |
Typical for Molybdenum Steel |
| Elongation |
- |
Elongation of 15.9 % |
- |
- |
- |
Predicted Value, A200 |
| - |
- |
Elongation of 16.0 % |
- |
- |
- |
Predicted Value, A80 |
| - |
- |
Elongation of 18.4 % |
- |
- |
- |
Predicted Value, A80 Transverse |
| - |
- |
Elongation of 19.5 % |
- |
- |
- |
Predicted Value, A5 |
| - |
- |
Elongation of 20.6 % |
- |
- |
- |
Predicted Value, A50 |
| - |
20 °C |
Elongation of 20 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
Transverse |
| - |
20 °C |
Elongation of 20 % |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
- |
| Hardness, Brinell |
- |
Hardness, Brinell of 242 [-] |
- |
- |
- |
Predicted Value, Transverse |
| Poisson's ratio |
- |
Poisson's ratio of 0.29 [-] |
- |
- |
- |
Typical for Molybdenum Steel |
| Reduction of area |
- |
Reduction of area of 43.0 % |
- |
- |
- |
Predicted Value |
| - |
- |
Reduction of area of 44.8 % |
- |
- |
- |
Predicted Value, Transverse |
| Shear modulus |
- |
Shear modulus of 79.5 GPa |
- |
- |
- |
Predicted Value |
| Shear strength |
- |
Shear strength of 691.1 MPa |
- |
- |
- |
Predicted Value |
| Tensile strength |
20 °C |
Tensile strength of 480 - 620 MPa |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
Transverse |
| - |
20 °C |
Tensile strength of 480 - 620 MPa |
quenched and tempered (+QT) |
EN 10028-2 |
Flat |
- |
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