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R30075 Cobalt vs. AWS BNi-1a

R30075 cobalt belongs to the cobalt alloys classification, while AWS BNi-1a 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-1a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
180
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 82 to 98
70
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
450

Thermal Properties

Latent Heat of Fusion, J/g 320
370
Melting Completion (Liquidus), °C 1360
1080
Melting Onset (Solidus), °C 1290
980
Specific Heat Capacity, J/kg-K 450
500
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.1
8.8
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 530
240

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
24
Strength to Weight: Axial, points 26 to 42
16
Strength to Weight: Bending, points 22 to 31
16
Thermal Shock Resistance, points 21 to 29
15

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
13 to 15
Cobalt (Co), % 58.7 to 68
0 to 0.1
Iron (Fe), % 0 to 0.75
4.0 to 5.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
70.6 to 76.3
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