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C18600 Copper vs. C72900 Copper-nickel

Both C18600 copper and C72900 copper-nickel are copper alloys. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is C18600 copper and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
120
Elongation at Break, % 8.0 to 11
6.0 to 20
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 44
45
Shear Strength, MPa 310 to 340
540 to 630
Tensile Strength: Ultimate (UTS), MPa 520 to 580
870 to 1080
Tensile Strength: Yield (Proof), MPa 500 to 520
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 210
210
Maximum Temperature: Mechanical, °C 200
210
Melting Completion (Liquidus), °C 1090
1120
Melting Onset (Solidus), °C 1070
950
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 280
29
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 71
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
39
Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 2.9
4.6
Embodied Energy, MJ/kg 46
72
Embodied Water, L/kg 310
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 58
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 1060 to 1180
2030 to 3490
Stiffness to Weight: Axial, points 7.3
7.6
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 16 to 18
27 to 34
Strength to Weight: Bending, points 16 to 17
23 to 27
Thermal Diffusivity, mm2/s 81
8.6
Thermal Shock Resistance, points 19 to 20
31 to 38

Alloy Composition

Chromium (Cr), % 0.1 to 1.0
0
Cobalt (Co), % 0 to 0.1
0
Copper (Cu), % 96.5 to 99.55
74.1 to 78
Iron (Fe), % 0.25 to 0.8
0 to 0.5
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0 to 0.25
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0
7.5 to 8.5
Titanium (Ti), % 0.050 to 0.5
0
Zinc (Zn), % 0
0 to 0.5
Zirconium (Zr), % 0.050 to 0.4
0
Residuals, % 0
0 to 0.3

Comparable Variants