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C18700 Copper vs. C71000 Copper-nickel

Both C18700 copper and C71000 copper-nickel are copper alloys. They have 77% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C18700 copper and the bottom bar is C71000 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
49
Tensile Strength: Ultimate (UTS), MPa 290 to 330
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 210
230
Maximum Temperature: Mechanical, °C 200
240
Melting Completion (Liquidus), °C 1080
1200
Melting Onset (Solidus), °C 950
1150
Specific Heat Capacity, J/kg-K 380
400
Thermal Conductivity, W/m-K 380
43
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 99
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 30
37
Density, g/cm3 9.0
8.9
Embodied Carbon, kg CO2/kg material 2.6
4.3
Embodied Energy, MJ/kg 41
63
Embodied Water, L/kg 310
290

Common Calculations

Stiffness to Weight: Axial, points 7.1
8.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.0 to 10
10 to 18
Strength to Weight: Bending, points 11 to 12
12 to 17
Thermal Diffusivity, mm2/s 110
12
Thermal Shock Resistance, points 10 to 12
12 to 20

Alloy Composition

Copper (Cu), % 98 to 99.2
73.5 to 80.5
Iron (Fe), % 0
0.5 to 1.0
Lead (Pb), % 0.8 to 1.5
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
19 to 23
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5

Comparable Variants