SAE-AISI P5 Steel vs. G-CoCr28 Cobalt
SAE-AISI P5 steel belongs to the iron alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 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 P5 steel and the bottom bar is G-CoCr28 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
210 |
Poisson's Ratio | 0.29 | |
0.28 |
Shear Modulus, GPa | 73 | |
83 |
Tensile Strength: Ultimate (UTS), MPa | 370 to 1980 | |
560 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
320 |
Melting Completion (Liquidus), °C | 1460 | |
1330 |
Melting Onset (Solidus), °C | 1420 | |
1270 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 45 | |
8.5 |
Thermal Expansion, µm/m-K | 12 | |
14 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.8 | |
100 |
Density, g/cm3 | 7.8 | |
8.1 |
Embodied Carbon, kg CO2/kg material | 1.5 | |
6.2 |
Embodied Energy, MJ/kg | 20 | |
84 |
Embodied Water, L/kg | 56 | |
440 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
15 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 13 to 70 | |
19 |
Strength to Weight: Bending, points | 15 to 45 | |
19 |
Thermal Diffusivity, mm2/s | 12 | |
2.2 |
Thermal Shock Resistance, points | 12 to 65 | |
14 |
Alloy Composition
Carbon (C), % | 0 to 0.1 | |
0.050 to 0.25 |
Chromium (Cr), % | 2.0 to 2.5 | |
27 to 30 |
Cobalt (Co), % | 0 | |
48 to 52 |
Copper (Cu), % | 0 to 0.25 | |
0 |
Iron (Fe), % | 95.7 to 97.8 | |
9.7 to 24.5 |
Manganese (Mn), % | 0.2 to 0.6 | |
0 to 1.5 |
Molybdenum (Mo), % | 0 | |
0 to 0.5 |
Nickel (Ni), % | 0 to 0.35 | |
0 to 4.0 |
Niobium (Nb), % | 0 | |
0 to 0.5 |
Phosphorus (P), % | 0 to 0.030 | |
0 to 0.040 |
Silicon (Si), % | 0 to 0.4 | |
0.5 to 1.5 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.030 |