Grade 366 Molybdenum vs. EN 1.6771 Steel
Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while EN 1.6771 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is EN 1.6771 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 300 | |
| 190 |
| Elongation at Break, % | 2.2 | |
| 8.0 to 8.7 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 120 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 580 | |
| 930 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 740 to 1140 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 210 | |
| 470 |
| Thermal Expansion, µm/m-K | 7.6 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 12 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 27 | |
| 1.9 |
| Embodied Energy, MJ/kg | 340 | |
| 25 |
| Embodied Water, L/kg | 300 | |
| 58 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 12 | |
| 75 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 1460 to 3450 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 18 | |
| 24 |
| Strength to Weight: Axial, points | 13 | |
| 33 to 41 |
| Strength to Weight: Bending, points | 13 | |
| 27 to 31 |
| Thermal Shock Resistance, points | 18 | |
| 27 to 35 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0.27 to 0.33 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 0 to 0.010 | |
| 92.2 to 95 |
| Manganese (Mn), % | 0 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 66.9 to 73 | |
| 0.3 to 0.6 |
| Nickel (Ni), % | 0 to 0.0020 | |
| 3.0 to 4.0 |
| Nitrogen (N), % | 0 to 0.0020 | |
| 0 |
| Oxygen (O), % | 0 to 0.0025 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.010 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 | |
| 0 to 0.020 |
| Tungsten (W), % | 27 to 33 | |
| 0 |