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G-CoCr28 Cobalt vs. AWS E320LR

G-CoCr28 cobalt belongs to the cobalt alloys classification, while AWS E320LR belongs to the iron alloys. They have 40% of their average alloy composition in common. There are 20 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 E320LR.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 6.7
34
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 83
77
Tensile Strength: Ultimate (UTS), MPa 560
580

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1330
1410
Melting Onset (Solidus), °C 1270
1360
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 14
14

Otherwise Unclassified Properties

Base Metal Price, % relative 100
36
Density, g/cm3 8.1
8.2
Embodied Carbon, kg CO2/kg material 6.2
6.2
Embodied Energy, MJ/kg 84
87
Embodied Water, L/kg 440
220

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 Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0.050 to 0.25
0 to 0.030
Chromium (Cr), % 27 to 30
19 to 21
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 9.7 to 24.5
32.7 to 42.5
Manganese (Mn), % 0 to 1.5
1.5 to 2.5
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 0 to 4.0
32 to 36
Niobium (Nb), % 0 to 0.5
0 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.5 to 1.5
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.015