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2124 Aluminum vs. C18200 Copper

2124 aluminum belongs to the aluminum alloys classification, while C18200 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 2124 aluminum and the bottom bar is C18200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
120
Elongation at Break, % 5.7
11 to 40
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
44
Shear Strength, MPa 280
210 to 320
Tensile Strength: Ultimate (UTS), MPa 490
310 to 530
Tensile Strength: Yield (Proof), MPa 430
97 to 450

Thermal Properties

Latent Heat of Fusion, J/g 390
210
Maximum Temperature: Mechanical, °C 190
200
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 500
1070
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 150
320
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
80
Electrical Conductivity: Equal Weight (Specific), % IACS 110
81

Otherwise Unclassified Properties

Base Metal Price, % relative 10
31
Density, g/cm3 3.0
8.9
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1150
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
43 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
40 to 860
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 45
9.6 to 16
Strength to Weight: Bending, points 46
11 to 16
Thermal Diffusivity, mm2/s 58
93
Thermal Shock Resistance, points 21
11 to 18

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
0
Chromium (Cr), % 0 to 0.1
0.6 to 1.2
Copper (Cu), % 3.8 to 4.9
98.6 to 99.4
Iron (Fe), % 0 to 0.3
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0
Silicon (Si), % 0 to 0.2
0 to 0.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0