SAE-AISI M2 Steel vs. AISI 440C Stainless Steel
Both SAE-AISI M2 steel and AISI 440C stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI M2 steel and the bottom bar is AISI 440C stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 2150 | |
| 710 to 1970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 280 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1480 |
| Melting Onset (Solidus), °C | 1570 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 480 |
| Thermal Conductivity, W/m-K | 22 | |
| 22 |
| Thermal Expansion, µm/m-K | 10 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 24 | |
| 9.0 |
| Density, g/cm3 | 8.4 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 8.8 | |
| 2.2 |
| Embodied Energy, MJ/kg | 130 | |
| 31 |
| Embodied Water, L/kg | 98 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 31 | |
| 18 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 71 | |
| 26 to 71 |
| Strength to Weight: Bending, points | 22 to 44 | |
| 23 to 46 |
| Thermal Diffusivity, mm2/s | 5.9 | |
| 6.0 |
| Thermal Shock Resistance, points | 27 to 76 | |
| 26 to 71 |
Alloy Composition
| Carbon (C), % | 0.78 to 1.1 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 3.8 to 4.5 | |
| 16 to 18 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 78.5 to 83.4 | |
| 78 to 83.1 |
| Manganese (Mn), % | 0.15 to 0.4 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 4.5 to 5.5 | |
| 0 to 0.75 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.2 to 0.45 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |
| Tungsten (W), % | 5.5 to 6.8 | |
| 0 |
| Vanadium (V), % | 1.8 to 2.2 | |
| 0 |