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AWS BNi-6 vs. C71640 Copper-nickel

AWS BNi-6 belongs to the nickel alloys classification, while C71640 copper-nickel belongs to the copper alloys. They have a modest 31% 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 (8, in this case) are not shown.

For each property being compared, the top bar is AWS BNi-6 and the bottom bar is C71640 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
140
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 62
52
Tensile Strength: Ultimate (UTS), MPa 450
490 to 630

Thermal Properties

Latent Heat of Fusion, J/g 260
240
Melting Completion (Liquidus), °C 880
1180
Melting Onset (Solidus), °C 880
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 9.8
15

Otherwise Unclassified Properties

Base Metal Price, % relative 55
40
Density, g/cm3 8.2
8.9
Embodied Carbon, kg CO2/kg material 9.4
5.0
Embodied Energy, MJ/kg 130
73
Embodied Water, L/kg 210
280

Common Calculations

Stiffness to Weight: Axial, points 11
8.7
Stiffness to Weight: Bending, points 22
20
Strength to Weight: Axial, points 15
15 to 20
Strength to Weight: Bending, points 16
16 to 18
Thermal Shock Resistance, points 20
16 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0 to 0.060
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 0
61.7 to 67.8
Iron (Fe), % 0
1.7 to 2.3
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
1.5 to 2.5
Nickel (Ni), % 87.2 to 90
29 to 32
Phosphorus (P), % 10 to 12
0
Selenium (Se), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0
0 to 1.0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.5