SAE-AISI M1 Steel vs. Grade 31 Titanium
SAE-AISI M1 steel belongs to the iron alloys classification, while grade 31 titanium belongs to the titanium 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 SAE-AISI M1 steel and the bottom bar is grade 31 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
110 |
Poisson's Ratio | 0.29 | |
0.32 |
Shear Modulus, GPa | 77 | |
41 |
Tensile Strength: Ultimate (UTS), MPa | 730 to 2140 | |
510 |
Thermal Properties
Latent Heat of Fusion, J/g | 270 | |
420 |
Melting Completion (Liquidus), °C | 1560 | |
1660 |
Melting Onset (Solidus), °C | 1510 | |
1610 |
Specific Heat Capacity, J/kg-K | 450 | |
540 |
Thermal Conductivity, W/m-K | 29 | |
21 |
Thermal Expansion, µm/m-K | 12 | |
8.7 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.1 | |
4.5 |
Embodied Carbon, kg CO2/kg material | 7.0 | |
36 |
Embodied Energy, MJ/kg | 99 | |
600 |
Embodied Water, L/kg | 98 | |
230 |
Common Calculations
Stiffness to Weight: Axial, points | 14 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
35 |
Strength to Weight: Axial, points | 25 to 73 | |
32 |
Strength to Weight: Bending, points | 22 to 45 | |
32 |
Thermal Diffusivity, mm2/s | 8.0 | |
8.5 |
Thermal Shock Resistance, points | 23 to 66 | |
39 |
Alloy Composition
Carbon (C), % | 0.78 to 0.88 | |
0 to 0.080 |
Chromium (Cr), % | 3.5 to 4.0 | |
0 |
Cobalt (Co), % | 0 | |
0.2 to 0.8 |
Copper (Cu), % | 0 to 0.25 | |
0 |
Hydrogen (H), % | 0 | |
0 to 0.015 |
Iron (Fe), % | 81 to 84.8 | |
0 to 0.3 |
Manganese (Mn), % | 0.15 to 0.4 | |
0 |
Molybdenum (Mo), % | 8.2 to 9.2 | |
0 |
Nickel (Ni), % | 0 to 0.3 | |
0 |
Nitrogen (N), % | 0 | |
0 to 0.050 |
Oxygen (O), % | 0 | |
0 to 0.35 |
Palladium (Pd), % | 0 | |
0.040 to 0.080 |
Phosphorus (P), % | 0 to 0.030 | |
0 |
Silicon (Si), % | 0.2 to 0.5 | |
0 |
Sulfur (S), % | 0 to 0.030 | |
0 |
Titanium (Ti), % | 0 | |
97.9 to 99.76 |
Tungsten (W), % | 1.4 to 2.1 | |
0 |
Vanadium (V), % | 1.0 to 1.4 | |
0 |
Residuals, % | 0 | |
0 to 0.4 |