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C81400 Copper vs. ACI-ASTM CB7Cu-2 Steel

C81400 copper belongs to the copper alloys classification, while ACI-ASTM CB7Cu-2 steel belongs to the iron alloys. There are 27 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 C81400 copper and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
5.7 to 11
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 41
75
Tensile Strength: Ultimate (UTS), MPa 370
960 to 1350
Tensile Strength: Yield (Proof), MPa 250
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 210
280
Melting Completion (Liquidus), °C 1090
1430
Melting Onset (Solidus), °C 1070
1380
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 260
17
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 61
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 33
13
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.6
Embodied Energy, MJ/kg 45
38
Embodied Water, L/kg 310
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1510 to 3600
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 11
34 to 48
Strength to Weight: Bending, points 13
28 to 35
Thermal Diffusivity, mm2/s 75
4.6
Thermal Shock Resistance, points 13
32 to 45

Alloy Composition

Beryllium (Be), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0.6 to 1.0
14 to 15.5
Copper (Cu), % 98.4 to 99.38
2.5 to 3.2
Iron (Fe), % 0
73.6 to 79
Manganese (Mn), % 0
0 to 0.7
Nickel (Ni), % 0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.5
0