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R30075 Cobalt vs. AWS BNi-3

R30075 cobalt belongs to the cobalt alloys classification, while AWS BNi-3 belongs to the nickel alloys. 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 R30075 cobalt and the bottom bar is AWS BNi-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
170
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 82 to 98
66
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
430

Thermal Properties

Latent Heat of Fusion, J/g 320
350
Melting Completion (Liquidus), °C 1360
1040
Melting Onset (Solidus), °C 1290
980
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.1
9.9
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
220

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
12
Stiffness to Weight: Bending, points 24 to 25
22
Strength to Weight: Axial, points 26 to 42
14
Strength to Weight: Bending, points 22 to 31
15
Thermal Shock Resistance, points 21 to 29
17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.050
Boron (B), % 0 to 0.010
2.8 to 3.5
Carbon (C), % 0 to 0.35
0 to 0.060
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 58.7 to 68
0 to 0.1
Iron (Fe), % 0 to 0.75
0 to 0.5
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
90.1 to 93.3
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
4.0 to 5.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0 to 0.1
0 to 0.050
Tungsten (W), % 0 to 0.2
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5