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C70700 Copper-nickel vs. EN 1.7225 Steel

C70700 copper-nickel belongs to the copper alloys classification, while EN 1.7225 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 1.7225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 46
73
Tensile Strength: Ultimate (UTS), MPa 320
540 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 220
250
Maximum Temperature: Mechanical, °C 220
420
Melting Completion (Liquidus), °C 1120
1460
Melting Onset (Solidus), °C 1060
1420
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 59
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.5
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
1.5
Embodied Energy, MJ/kg 52
20
Embodied Water, L/kg 300
51

Common Calculations

Stiffness to Weight: Axial, points 7.6
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 10
19 to 65
Strength to Weight: Bending, points 12
19 to 43
Thermal Diffusivity, mm2/s 17
12
Thermal Shock Resistance, points 12
16 to 54

Alloy Composition

Carbon (C), % 0
0.38 to 0.45
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 88.5 to 90.5
0 to 0.25
Iron (Fe), % 0 to 0.050
96.6 to 98
Manganese (Mn), % 0 to 0.5
0.6 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 9.5 to 10.5
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Residuals, % 0 to 0.5
0