AISI 431 Stainless Steel vs. Grade 361 Molybdenum
AISI 431 stainless steel belongs to the iron alloys classification, while grade 361 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is grade 361 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 310 |
| Elongation at Break, % | 15 to 17 | |
| 6.3 |
| Poisson's Ratio | 0.28 | |
| 0.31 |
| Shear Modulus, GPa | 77 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1380 | |
| 620 |
| Tensile Strength: Yield (Proof), MPa | 710 to 1040 | |
| 530 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 250 |
| Thermal Expansion, µm/m-K | 12 | |
| 7.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 10 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 28 |
| Embodied Energy, MJ/kg | 31 | |
| 330 |
| Embodied Water, L/kg | 120 | |
| 360 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 180 | |
| 37 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1270 to 2770 | |
| 450 |
| Stiffness to Weight: Axial, points | 14 | |
| 17 |
| Stiffness to Weight: Bending, points | 25 | |
| 22 |
| Strength to Weight: Axial, points | 32 to 50 | |
| 17 |
| Strength to Weight: Bending, points | 27 to 36 | |
| 16 |
| Thermal Shock Resistance, points | 28 to 43 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 to 0.010 |
| Chromium (Cr), % | 15 to 17 | |
| 0 |
| Iron (Fe), % | 78.2 to 83.8 | |
| 0 to 0.010 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 99.9 to 100 |
| Nickel (Ni), % | 1.3 to 2.5 | |
| 0 to 0.0050 |
| Nitrogen (N), % | 0 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0070 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.010 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |