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G-CoCr28 Cobalt vs. AWS E330

G-CoCr28 cobalt belongs to the cobalt alloys classification, while AWS E330 belongs to the iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. 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 G-CoCr28 cobalt and the bottom bar is AWS E330.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 6.7
29
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 83
76
Tensile Strength: Ultimate (UTS), MPa 560
580

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1330
1400
Melting Onset (Solidus), °C 1270
1350
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 8.5
12
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 100
31
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 6.2
5.4
Embodied Energy, MJ/kg 84
75
Embodied Water, L/kg 440
180

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 2.2
3.2
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0.050 to 0.25
0.18 to 0.25
Chromium (Cr), % 27 to 30
14 to 17
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 9.7 to 24.5
40.7 to 51.8
Manganese (Mn), % 0 to 1.5
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.75
Nickel (Ni), % 0 to 4.0
33 to 37
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 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030