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2018 Aluminum vs. C91000 Bronze

2018 aluminum belongs to the aluminum alloys classification, while C91000 bronze 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 2018 aluminum and the bottom bar is C91000 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
180
Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 9.6
7.0
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
39
Tensile Strength: Ultimate (UTS), MPa 420
230
Tensile Strength: Yield (Proof), MPa 310
150

Thermal Properties

Latent Heat of Fusion, J/g 390
180
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 640
960
Melting Onset (Solidus), °C 510
820
Specific Heat Capacity, J/kg-K 870
360
Thermal Conductivity, W/m-K 150
64
Thermal Expansion, µm/m-K 22
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 3.1
8.6
Embodied Carbon, kg CO2/kg material 8.1
4.1
Embodied Energy, MJ/kg 150
67
Embodied Water, L/kg 1130
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
14
Resilience: Unit (Modulus of Resilience), kJ/m3 670
100
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 45
18
Strength to Weight: Axial, points 38
7.5
Strength to Weight: Bending, points 41
9.7
Thermal Diffusivity, mm2/s 57
20
Thermal Shock Resistance, points 19
8.8

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
84 to 86
Iron (Fe), % 0 to 1.0
0 to 0.1
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0 to 0.8
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.9
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
14 to 16
Zinc (Zn), % 0 to 0.25
0 to 1.5
Residuals, % 0
0 to 0.6