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C72900 Copper-nickel vs. C97400 Nickel Silver

Both C72900 copper-nickel and C97400 nickel silver are copper alloys. They have 78% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C72900 copper-nickel and the bottom bar is C97400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 6.0 to 20
20
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 45
44
Tensile Strength: Ultimate (UTS), MPa 870 to 1080
260
Tensile Strength: Yield (Proof), MPa 700 to 920
120

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 210
180
Melting Completion (Liquidus), °C 1120
1100
Melting Onset (Solidus), °C 950
1070
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 29
27
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 39
33
Density, g/cm3 8.8
8.6
Embodied Carbon, kg CO2/kg material 4.6
4.1
Embodied Energy, MJ/kg 72
64
Embodied Water, L/kg 360
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 210
43
Resilience: Unit (Modulus of Resilience), kJ/m3 2030 to 3490
59
Stiffness to Weight: Axial, points 7.6
7.5
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 27 to 34
8.5
Strength to Weight: Bending, points 23 to 27
11
Thermal Diffusivity, mm2/s 8.6
8.3
Thermal Shock Resistance, points 31 to 38
8.8

Alloy Composition

Copper (Cu), % 74.1 to 78
58 to 61
Iron (Fe), % 0 to 0.5
0 to 1.5
Lead (Pb), % 0 to 0.020
4.5 to 5.5
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.3
0 to 0.5
Nickel (Ni), % 14.5 to 15.5
15.5 to 17
Niobium (Nb), % 0 to 0.1
0
Tin (Sn), % 7.5 to 8.5
2.5 to 3.5
Zinc (Zn), % 0 to 0.5
10 to 19.5
Residuals, % 0
0 to 1.0