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R30003 Cobalt vs. AWS BCo-1

Both R30003 cobalt and AWS BCo-1 are cobalt alloys. They have 75% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 83
78
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
700

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Melting Completion (Liquidus), °C 1400
1150
Melting Onset (Solidus), °C 1440
1120
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 8.0
8.0
Embodied Energy, MJ/kg 110
110
Embodied Water, L/kg 400
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32 to 57
24
Strength to Weight: Bending, points 26 to 38
22
Thermal Shock Resistance, points 26 to 45
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0 to 0.1
0.7 to 0.9
Carbon (C), % 0 to 0.15
0.35 to 0.45
Chromium (Cr), % 19 to 21
18 to 20
Cobalt (Co), % 39 to 41
46 to 54
Iron (Fe), % 10 to 20.5
0 to 1.0
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
16 to 18
Phosphorus (P), % 0 to 0.015
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.2
7.5 to 8.5
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5