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2124 Aluminum vs. C92700 Bronze

2124 aluminum belongs to the aluminum alloys classification, while C92700 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 C92700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 5.7
9.1
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
40
Tensile Strength: Ultimate (UTS), MPa 490
290
Tensile Strength: Yield (Proof), MPa 430
150

Thermal Properties

Latent Heat of Fusion, J/g 390
190
Maximum Temperature: Mechanical, °C 190
170
Melting Completion (Liquidus), °C 640
980
Melting Onset (Solidus), °C 500
840
Specific Heat Capacity, J/kg-K 880
370
Thermal Conductivity, W/m-K 150
47
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
11
Electrical Conductivity: Equal Weight (Specific), % IACS 110
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
35
Density, g/cm3 3.0
8.7
Embodied Carbon, kg CO2/kg material 8.2
3.6
Embodied Energy, MJ/kg 150
58
Embodied Water, L/kg 1150
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
22
Resilience: Unit (Modulus of Resilience), kJ/m3 1290
110
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 46
18
Strength to Weight: Axial, points 45
9.1
Strength to Weight: Bending, points 46
11
Thermal Diffusivity, mm2/s 58
15
Thermal Shock Resistance, points 21
11

Alloy Composition

Aluminum (Al), % 91.3 to 94.7
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.8 to 4.9
86 to 89
Iron (Fe), % 0 to 0.3
0 to 0.2
Lead (Pb), % 0
1.0 to 2.5
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.2
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
9.0 to 11
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.7
Residuals, % 0
0 to 0.7