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70Ag-30Ni Alloy vs. C71000 Copper-nickel

70Ag-30Ni alloy belongs to the otherwise unclassified metals classification, while C71000 copper-nickel belongs to the copper alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 70Ag-30Ni alloy and the bottom bar is C71000 copper-nickel.

70-Silver 30-Nickel Electrical Contact AlloyUNS C71000 Copper-Nickel
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
130
Poisson's Ratio 0.35
0.33
Shear Modulus, GPa 39
49
Tensile Strength: Ultimate (UTS), MPa 320 to 530
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 170
230
Melting Completion (Liquidus), °C 960
1200
Melting Onset (Solidus), °C 960
1150
Specific Heat Capacity, J/kg-K 300
400
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 69
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 62
6.6

Otherwise Unclassified Properties

Density, g/cm3 10
8.9

Common Calculations

Stiffness to Weight: Axial, points 5.8
8.2
Stiffness to Weight: Bending, points 16
19
Strength to Weight: Axial, points 8.8 to 15
10 to 18
Strength to Weight: Bending, points 10 to 15
12 to 17
Thermal Shock Resistance, points 13 to 21
12 to 20

Alloy Composition


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Copper (Cu), % 0
73.5 to 80.5
Iron (Fe), % 0
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 28.8 to 31
19 to 23
Silver (Ag), % 69 to 71
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0 to 0.2
0 to 0.5