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C74400 Nickel Silver vs. C18600 Copper

Both C74400 nickel silver and C18600 copper are copper alloys. They have 64% of their average alloy composition in common.

For each property being compared, the top bar is C74400 nickel silver and the bottom bar is C18600 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 43
8.0 to 11
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 39
44
Shear Strength, MPa 240
310 to 340
Tensile Strength: Ultimate (UTS), MPa 350
520 to 580
Tensile Strength: Yield (Proof), MPa 120
500 to 520

Thermal Properties

Latent Heat of Fusion, J/g 180
210
Maximum Temperature: Mechanical, °C 140
200
Melting Completion (Liquidus), °C 930
1090
Melting Onset (Solidus), °C 910
1070
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
280
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
70
Electrical Conductivity: Equal Weight (Specific), % IACS 29
71

Otherwise Unclassified Properties

Base Metal Price, % relative 25
31
Density, g/cm3 8.2
8.9
Embodied Carbon, kg CO2/kg material 2.9
2.9
Embodied Energy, MJ/kg 48
46
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
44 to 58
Resilience: Unit (Modulus of Resilience), kJ/m3 63
1060 to 1180
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 12
16 to 18
Strength to Weight: Bending, points 14
16 to 17
Thermal Diffusivity, mm2/s 37
81
Thermal Shock Resistance, points 12
19 to 20

Alloy Composition


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Chromium (Cr), % 0
0.1 to 1.0
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 62 to 66
96.5 to 99.55
Iron (Fe), % 0 to 0.050
0.25 to 0.8
Lead (Pb), % 0 to 0.050
0
Nickel (Ni), % 2.0 to 4.0
0 to 0.25
Titanium (Ti), % 0
0.050 to 0.5
Zinc (Zn), % 29.6 to 36
0
Zirconium (Zr), % 0
0.050 to 0.4
Residuals, % 0 to 0.3
0 to 0.5