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G-CoCr28 Cobalt vs. AWS ER120S-1

G-CoCr28 cobalt belongs to the cobalt alloys classification, while AWS ER120S-1 belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is AWS ER120S-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 6.7
17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 83
73
Tensile Strength: Ultimate (UTS), MPa 560
930
Tensile Strength: Yield (Proof), MPa 260
830

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1330
1460
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 8.5
46
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 100
4.2
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
1.9
Embodied Energy, MJ/kg 84
25
Embodied Water, L/kg 440
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1850
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
33
Strength to Weight: Bending, points 19
27
Thermal Diffusivity, mm2/s 2.2
13
Thermal Shock Resistance, points 14
27

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.050 to 0.25
0 to 0.1
Chromium (Cr), % 27 to 30
0 to 0.6
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 9.7 to 24.5
92.4 to 96.1
Manganese (Mn), % 0 to 1.5
1.4 to 1.8
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.65
Nickel (Ni), % 0 to 4.0
2.0 to 2.8
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0.5 to 1.5
0.25 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0
0 to 0.030
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.5