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3105 Aluminum vs. C91100 Bronze

3105 aluminum belongs to the aluminum alloys classification, while C91100 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 3105 aluminum and the bottom bar is C91100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 1.1 to 20
2.0
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 120 to 240
240
Tensile Strength: Yield (Proof), MPa 46 to 220
170

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 660
950
Melting Onset (Solidus), °C 640
820
Specific Heat Capacity, J/kg-K 900
360
Thermal Conductivity, W/m-K 170
63
Thermal Expansion, µm/m-K 24
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.8
8.7
Embodied Carbon, kg CO2/kg material 8.2
4.2
Embodied Energy, MJ/kg 150
69
Embodied Water, L/kg 1180
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
4.4
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
140
Stiffness to Weight: Axial, points 14
6.7
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12 to 24
7.7
Strength to Weight: Bending, points 20 to 31
9.9
Thermal Diffusivity, mm2/s 68
20
Thermal Shock Resistance, points 5.2 to 11
9.1

Alloy Composition

Aluminum (Al), % 96 to 99.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.3
82 to 85
Iron (Fe), % 0 to 0.7
0 to 0.25
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 1.0
Silicon (Si), % 0 to 0.6
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
15 to 17
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
0 to 0.25
Residuals, % 0 to 0.15
0