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C72700 Copper-nickel vs. SAE-AISI A7 Steel

C72700 copper-nickel belongs to the copper alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C72700 copper-nickel and the bottom bar is SAE-AISI A7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
72
Tensile Strength: Ultimate (UTS), MPa 460 to 1070
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Melting Completion (Liquidus), °C 1100
1470
Melting Onset (Solidus), °C 930
1430
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 54
37
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
10
Density, g/cm3 8.8
7.7
Embodied Carbon, kg CO2/kg material 4.0
13
Embodied Energy, MJ/kg 62
200
Embodied Water, L/kg 350
100

Common Calculations

Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 14 to 34
29 to 77
Strength to Weight: Bending, points 15 to 26
25 to 48
Thermal Diffusivity, mm2/s 16
10
Thermal Shock Resistance, points 16 to 38
27 to 72

Alloy Composition

Carbon (C), % 0
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 82.1 to 86
0 to 0.25
Iron (Fe), % 0 to 0.5
81.4 to 87.7
Lead (Pb), % 0 to 0.020
0
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0.050 to 0.3
0 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 8.5 to 9.5
0 to 0.3
Niobium (Nb), % 0 to 0.1
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 6.5
0
Tungsten (W), % 0
0.5 to 1.5
Vanadium (V), % 0
3.9 to 5.2
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0