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C70700 Copper-nickel vs. C77400 Nickel Silver

Both C70700 copper-nickel and C77400 nickel silver are copper alloys. They have 55% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is C77400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 39
25
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 46
42
Shear Strength, MPa 220
360
Tensile Strength: Ultimate (UTS), MPa 320
570
Tensile Strength: Yield (Proof), MPa 110
250

Thermal Properties

Latent Heat of Fusion, J/g 220
170
Maximum Temperature: Mechanical, °C 220
130
Melting Completion (Liquidus), °C 1120
810
Melting Onset (Solidus), °C 1060
770
Specific Heat Capacity, J/kg-K 390
390
Thermal Expansion, µm/m-K 16
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
27
Electrical Conductivity: Equal Weight (Specific), % IACS 12
31

Otherwise Unclassified Properties

Base Metal Price, % relative 34
25
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 3.4
3.5
Embodied Energy, MJ/kg 52
57
Embodied Water, L/kg 300
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 51
290
Stiffness to Weight: Axial, points 7.6
7.7
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 10
20
Strength to Weight: Bending, points 12
19
Thermal Shock Resistance, points 12
18

Alloy Composition

Copper (Cu), % 88.5 to 90.5
43 to 47
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0
0 to 0.2
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 9.5 to 10.5
9.0 to 11
Zinc (Zn), % 0
41.3 to 48
Residuals, % 0
0 to 0.5