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R30001 Cobalt vs. AWS BNi-8

R30001 cobalt belongs to the cobalt alloys classification, while AWS BNi-8 belongs to the nickel alloys. There are 18 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 86
67
Tensile Strength: Ultimate (UTS), MPa 620
570

Thermal Properties

Latent Heat of Fusion, J/g 310
390
Melting Completion (Liquidus), °C 1530
1010
Melting Onset (Solidus), °C 1260
980
Specific Heat Capacity, J/kg-K 430
480
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Density, g/cm3 9.0
7.9
Embodied Carbon, kg CO2/kg material 8.9
8.2
Embodied Energy, MJ/kg 130
120
Embodied Water, L/kg 460
220

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 18
19
Thermal Shock Resistance, points 19
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 2.0 to 3.0
0 to 0.060
Chromium (Cr), % 28 to 32
0
Cobalt (Co), % 43 to 59
0 to 0.1
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 0 to 3.0
0
Manganese (Mn), % 0
21.5 to 24.5
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
61.6 to 68.5
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 2.0
6.0 to 8.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 11 to 13
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5