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C70700 Copper-nickel vs. EN 1.7108 Steel

C70700 copper-nickel belongs to the copper alloys classification, while EN 1.7108 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C70700 copper-nickel and the bottom bar is EN 1.7108 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
200 to 510
Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 46
72
Tensile Strength: Ultimate (UTS), MPa 320
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 220
280
Maximum Temperature: Mechanical, °C 220
410
Melting Completion (Liquidus), °C 1120
1430
Melting Onset (Solidus), °C 1060
1390
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 59
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.1
Density, g/cm3 8.9
7.7
Embodied Carbon, kg CO2/kg material 3.4
1.5
Embodied Energy, MJ/kg 52
20
Embodied Water, L/kg 300
47

Common Calculations

Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 10
24 to 75
Strength to Weight: Bending, points 12
22 to 47
Thermal Diffusivity, mm2/s 17
12
Thermal Shock Resistance, points 12
20 to 63

Alloy Composition

Carbon (C), % 0
0.57 to 0.65
Chromium (Cr), % 0
0.2 to 0.45
Copper (Cu), % 88.5 to 90.5
0
Iron (Fe), % 0 to 0.050
95.9 to 96.9
Manganese (Mn), % 0 to 0.5
0.7 to 1.0
Nickel (Ni), % 9.5 to 10.5
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
1.6 to 2.0
Sulfur (S), % 0
0 to 0.025
Residuals, % 0 to 0.5
0