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R30021 Cobalt vs. AWS BAg-26

R30021 cobalt belongs to the cobalt alloys classification, while AWS BAg-26 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is R30021 cobalt and the bottom bar is AWS BAg-26.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
98
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 86
37
Tensile Strength: Ultimate (UTS), MPa 700
160

Thermal Properties

Latent Heat of Fusion, J/g 330
160
Melting Completion (Liquidus), °C 1350
800
Melting Onset (Solidus), °C 1190
710
Specific Heat Capacity, J/kg-K 450
350
Thermal Expansion, µm/m-K 11
21

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.5
Embodied Carbon, kg CO2/kg material 8.0
26
Embodied Energy, MJ/kg 110
410

Common Calculations

Stiffness to Weight: Axial, points 15
6.4
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 23
5.2
Strength to Weight: Bending, points 21
7.7
Thermal Shock Resistance, points 21
5.6

Alloy Composition


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Carbon (C), % 0.2 to 0.35
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 61.7 to 67.3
0
Copper (Cu), % 0
37 to 39
Iron (Fe), % 0 to 3.0
0
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
1.5 to 2.5
Silicon (Si), % 0 to 1.5
0
Silver (Ag), % 0
24 to 26
Zinc (Zn), % 0
31 to 35
Residuals, % 0
0 to 0.15