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AWS BNi-5 vs. R30075 Cobalt

AWS BNi-5 belongs to the nickel alloys classification, while R30075 cobalt belongs to the cobalt 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 AWS BNi-5 and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
82 to 98
Tensile Strength: Ultimate (UTS), MPa 470
780 to 1280

Thermal Properties

Latent Heat of Fusion, J/g 470
320
Melting Completion (Liquidus), °C 1140
1360
Melting Onset (Solidus), °C 1080
1290
Specific Heat Capacity, J/kg-K 510
450
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 8.9
8.1
Embodied Energy, MJ/kg 130
110
Embodied Water, L/kg 260
530

Common Calculations

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

Alloy Composition


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Aluminum (Al), % 0 to 0.050
0 to 0.1
Boron (B), % 0 to 0.030
0 to 0.010
Carbon (C), % 0 to 0.060
0 to 0.35
Chromium (Cr), % 18.5 to 19.5
27 to 30
Cobalt (Co), % 0 to 0.1
58.7 to 68
Iron (Fe), % 0
0 to 0.75
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 69.1 to 71.8
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 9.8 to 10.5
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0 to 0.050
0 to 0.1
Tungsten (W), % 0
0 to 0.2
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0 to 0.5
0