SAE-AISI L3 Steel vs. R30012 Cobalt
SAE-AISI L3 steel belongs to the iron alloys classification, while R30012 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI L3 steel and the bottom bar is R30012 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
220 |
Poisson's Ratio | 0.29 | |
0.28 |
Shear Modulus, GPa | 72 | |
86 |
Tensile Strength: Ultimate (UTS), MPa | 600 to 2250 | |
830 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
320 |
Melting Completion (Liquidus), °C | 1450 | |
1470 |
Melting Onset (Solidus), °C | 1410 | |
1280 |
Specific Heat Capacity, J/kg-K | 470 | |
440 |
Thermal Conductivity, W/m-K | 43 | |
15 |
Thermal Expansion, µm/m-K | 13 | |
12 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
1.8 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
1.8 |
Otherwise Unclassified Properties
Density, g/cm3 | 7.8 | |
8.8 |
Embodied Carbon, kg CO2/kg material | 1.9 | |
8.3 |
Embodied Energy, MJ/kg | 27 | |
120 |
Embodied Water, L/kg | 53 | |
480 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
23 |
Strength to Weight: Axial, points | 21 to 80 | |
26 |
Strength to Weight: Bending, points | 20 to 49 | |
22 |
Thermal Diffusivity, mm2/s | 12 | |
3.8 |
Thermal Shock Resistance, points | 18 to 67 | |
23 |
Alloy Composition
Carbon (C), % | 1.0 to 1.1 | |
1.4 to 2.0 |
Chromium (Cr), % | 1.3 to 1.7 | |
27 to 32 |
Cobalt (Co), % | 0 | |
47.5 to 64.1 |
Iron (Fe), % | 95.5 to 97.3 | |
0 to 3.0 |
Manganese (Mn), % | 0.25 to 0.8 | |
0 |
Molybdenum (Mo), % | 0 | |
0 to 1.0 |
Nickel (Ni), % | 0 | |
0 to 3.0 |
Phosphorus (P), % | 0 to 0.030 | |
0 |
Silicon (Si), % | 0.1 to 0.5 | |
0 to 2.0 |
Sulfur (S), % | 0 to 0.030 | |
0 |
Tungsten (W), % | 0 | |
7.5 to 9.5 |
Vanadium (V), % | 0.1 to 0.3 | |
0 |