EN 1.4938 Stainless Steel vs. Grade 366 Molybdenum
EN 1.4938 stainless 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 1.4938 stainless steel and the bottom bar is grade 366 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 300 |
| Elongation at Break, % | 16 to 17 | |
| 2.2 |
| Poisson's Ratio | 0.28 | |
| 0.3 |
| Shear Modulus, GPa | 76 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 580 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 470 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 210 |
| Thermal Expansion, µm/m-K | 11 | |
| 7.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 12 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 27 |
| Embodied Energy, MJ/kg | 47 | |
| 340 |
| Embodied Water, L/kg | 110 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 12 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 370 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 18 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 13 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 13 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 18 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.15 | |
| 0 to 0.030 |
| Chromium (Cr), % | 11 to 12.5 | |
| 0 |
| Iron (Fe), % | 80.5 to 84.8 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0.4 to 0.9 | |
| 0 |
| Molybdenum (Mo), % | 1.5 to 2.0 | |
| 66.9 to 73 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 to 0.0020 |
| Nitrogen (N), % | 0.020 to 0.040 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0025 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Tungsten (W), % | 0 | |
| 27 to 33 |
| Vanadium (V), % | 0.25 to 0.4 | |
| 0 |