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AWS BNi-3 vs. AWS BCo-1

AWS BNi-3 belongs to the nickel alloys classification, while AWS BCo-1 belongs to the cobalt alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-3 and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
200
Poisson's Ratio 0.31
0.3
Shear Modulus, GPa 66
78
Tensile Strength: Ultimate (UTS), MPa 430
700

Thermal Properties

Brazing Temperature, °C 1010 to 1180
1150 to 1230
Latent Heat of Fusion, J/g 350
420
Melting Completion (Liquidus), °C 1040
1150
Melting Onset (Solidus), °C 980
1120
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.1
Embodied Carbon, kg CO2/kg material 9.9
8.0
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 220
430

Common Calculations

Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 14
24
Strength to Weight: Bending, points 15
22
Thermal Shock Resistance, points 17
21

Alloy Composition

Aluminum (Al), % 0 to 0.050
0 to 0.050
Boron (B), % 2.8 to 3.5
0.7 to 0.9
Carbon (C), % 0 to 0.060
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0 to 0.1
46 to 54
Iron (Fe), % 0 to 0.5
0 to 1.0
Nickel (Ni), % 90.1 to 93.3
16 to 18
Phosphorus (P), % 0 to 0.020
0 to 0.020
Selenium (Se), % 0 to 0.0050
0 to 0.0050
Silicon (Si), % 4.0 to 5.0
7.5 to 8.5
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0 to 0.050
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 0 to 0.050
0 to 0.050
Residuals, % 0
0 to 0.5