G-CoCr28 Cobalt vs. SAE-AISI 1144 Steel
G-CoCr28 cobalt belongs to the cobalt alloys classification, while SAE-AISI 1144 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is SAE-AISI 1144 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 210 | |
190 |
Elongation at Break, % | 6.7 | |
11 to 17 |
Fatigue Strength, MPa | 130 | |
280 to 430 |
Poisson's Ratio | 0.28 | |
0.29 |
Shear Modulus, GPa | 83 | |
72 |
Tensile Strength: Ultimate (UTS), MPa | 560 | |
750 to 840 |
Tensile Strength: Yield (Proof), MPa | 260 | |
420 to 690 |
Thermal Properties
Latent Heat of Fusion, J/g | 320 | |
250 |
Maximum Temperature: Mechanical, °C | 1200 | |
400 |
Melting Completion (Liquidus), °C | 1330 | |
1450 |
Melting Onset (Solidus), °C | 1270 | |
1410 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 8.5 | |
51 |
Thermal Expansion, µm/m-K | 14 | |
13 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 100 | |
1.9 |
Density, g/cm3 | 8.1 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 6.2 | |
1.4 |
Embodied Energy, MJ/kg | 84 | |
19 |
Embodied Water, L/kg | 440 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
91 to 110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
480 to 1290 |
Stiffness to Weight: Axial, points | 15 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 19 | |
27 to 30 |
Strength to Weight: Bending, points | 19 | |
23 to 25 |
Thermal Diffusivity, mm2/s | 2.2 | |
14 |
Thermal Shock Resistance, points | 14 | |
22 to 24 |
Alloy Composition
Carbon (C), % | 0.050 to 0.25 | |
0.4 to 0.48 |
Chromium (Cr), % | 27 to 30 | |
0 |
Cobalt (Co), % | 48 to 52 | |
0 |
Iron (Fe), % | 9.7 to 24.5 | |
97.5 to 98 |
Manganese (Mn), % | 0 to 1.5 | |
1.4 to 1.7 |
Molybdenum (Mo), % | 0 to 0.5 | |
0 |
Nickel (Ni), % | 0 to 4.0 | |
0 |
Niobium (Nb), % | 0 to 0.5 | |
0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0.5 to 1.5 | |
0 |
Sulfur (S), % | 0 to 0.030 | |
0.24 to 0.33 |