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R30035 Cobalt vs. AWS BCo-1

Both R30035 cobalt and AWS BCo-1 are cobalt alloys. They have 71% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R30035 cobalt and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220 to 230
200
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 84 to 89
78
Tensile Strength: Ultimate (UTS), MPa 900 to 1900
700

Thermal Properties

Latent Heat of Fusion, J/g 320
420
Melting Completion (Liquidus), °C 1440
1150
Melting Onset (Solidus), °C 1320
1120
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.1
Embodied Carbon, kg CO2/kg material 10
8.0
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 410
430

Common Calculations

Stiffness to Weight: Axial, points 14 to 15
14
Stiffness to Weight: Bending, points 23 to 24
24
Strength to Weight: Axial, points 29 to 61
24
Strength to Weight: Bending, points 24 to 39
22
Thermal Shock Resistance, points 23 to 46
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0 to 0.015
0.7 to 0.9
Carbon (C), % 0 to 0.025
0.35 to 0.45
Chromium (Cr), % 19 to 21
18 to 20
Cobalt (Co), % 29.1 to 39
46 to 54
Iron (Fe), % 0 to 1.0
0 to 1.0
Manganese (Mn), % 0 to 0.15
0
Molybdenum (Mo), % 9.0 to 10.5
0
Nickel (Ni), % 33 to 37
16 to 18
Phosphorus (P), % 0 to 0.015
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.15
7.5 to 8.5
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0 to 1.0
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