Grade 366 Molybdenum vs. S66286 Stainless Steel
Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while S66286 stainless 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 S66286 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 300 | |
| 190 |
| Elongation at Break, % | 2.2 | |
| 17 to 40 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 120 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 580 | |
| 620 to 1020 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 280 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 300 |
| Specific Heat Capacity, J/kg-K | 210 | |
| 470 |
| Thermal Expansion, µm/m-K | 7.6 | |
| 17 |
Otherwise Unclassified Properties
| Density, g/cm3 | 12 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 27 | |
| 6.0 |
| Embodied Energy, MJ/kg | 340 | |
| 87 |
| Embodied Water, L/kg | 300 | |
| 170 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 12 | |
| 150 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 190 to 1150 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 18 | |
| 24 |
| Strength to Weight: Axial, points | 13 | |
| 22 to 36 |
| Strength to Weight: Bending, points | 13 | |
| 20 to 28 |
| Thermal Shock Resistance, points | 18 | |
| 13 to 22 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.35 |
| Boron (B), % | 0 | |
| 0.0010 to 0.010 |
| Carbon (C), % | 0 to 0.030 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0 | |
| 13.5 to 16 |
| Iron (Fe), % | 0 to 0.010 | |
| 49.1 to 59.5 |
| Manganese (Mn), % | 0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 66.9 to 73 | |
| 1.0 to 1.5 |
| Nickel (Ni), % | 0 to 0.0020 | |
| 24 to 27 |
| Nitrogen (N), % | 0 to 0.0020 | |
| 0 |
| Oxygen (O), % | 0 to 0.0025 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.010 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 1.9 to 2.4 |
| Tungsten (W), % | 27 to 33 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.5 |