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G-CoCr28 Cobalt vs. AWS E409Nb

G-CoCr28 cobalt belongs to the cobalt alloys classification, while AWS E409Nb belongs to the iron alloys. They have a modest 31% 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 (5, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is AWS E409Nb.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 6.7
23
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 83
76
Tensile Strength: Ultimate (UTS), MPa 560
500
Tensile Strength: Yield (Proof), MPa 260
380

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Melting Completion (Liquidus), °C 1330
1460
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 8.5
25
Thermal Expansion, µm/m-K 14
14

Otherwise Unclassified Properties

Base Metal Price, % relative 100
13
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
2.9
Embodied Energy, MJ/kg 84
42
Embodied Water, L/kg 440
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
380
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 2.2
6.8
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0.050 to 0.25
0 to 0.12
Chromium (Cr), % 27 to 30
11 to 14
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 9.7 to 24.5
80.2 to 88.5
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.75
Nickel (Ni), % 0 to 4.0
0 to 0.6
Niobium (Nb), % 0 to 0.5
0.5 to 1.5
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