EN 1.6579 Steel vs. Grade 366 Molybdenum
EN 1.6579 steel belongs to the iron alloys classification, while grade 366 molybdenum belongs to the otherwise unclassified metals. 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 EN 1.6579 steel and the bottom bar is grade 366 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 300 |
| Elongation at Break, % | 11 to 14 | |
| 2.2 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 73 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 850 to 980 | |
| 580 |
| Tensile Strength: Yield (Proof), MPa | 600 to 910 | |
| 470 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 210 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 12 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 27 |
| Embodied Energy, MJ/kg | 22 | |
| 340 |
| Embodied Water, L/kg | 56 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 120 | |
| 12 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 950 to 2210 | |
| 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 18 |
| Strength to Weight: Axial, points | 30 to 35 | |
| 13 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 13 |
| Thermal Shock Resistance, points | 25 to 29 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0.32 to 0.38 | |
| 0 to 0.030 |
| Chromium (Cr), % | 1.4 to 1.7 | |
| 0 |
| Iron (Fe), % | 94.2 to 96.1 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0.15 to 0.35 | |
| 66.9 to 73 |
| Nickel (Ni), % | 1.4 to 1.7 | |
| 0 to 0.0020 |
| Nitrogen (N), % | 0 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0025 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tungsten (W), % | 0 | |
| 27 to 33 |