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2018 Aluminum vs. C95820 Bronze

2018 aluminum belongs to the aluminum alloys classification, while C95820 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 2018 aluminum and the bottom bar is C95820 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 9.6
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
44
Tensile Strength: Ultimate (UTS), MPa 420
730
Tensile Strength: Yield (Proof), MPa 310
310

Thermal Properties

Latent Heat of Fusion, J/g 390
230
Maximum Temperature: Mechanical, °C 220
230
Melting Completion (Liquidus), °C 640
1080
Melting Onset (Solidus), °C 510
1020
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 150
38
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 3.1
8.3
Embodied Carbon, kg CO2/kg material 8.1
3.5
Embodied Energy, MJ/kg 150
56
Embodied Water, L/kg 1130
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
86
Resilience: Unit (Modulus of Resilience), kJ/m3 670
400
Stiffness to Weight: Axial, points 13
8.0
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 38
24
Strength to Weight: Bending, points 41
22
Thermal Diffusivity, mm2/s 57
11
Thermal Shock Resistance, points 19
25

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
9.0 to 10
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
77.5 to 82.5
Iron (Fe), % 0 to 1.0
4.0 to 5.0
Lead (Pb), % 0
0 to 0.020
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0 to 1.5
Nickel (Ni), % 1.7 to 2.3
4.5 to 5.8
Silicon (Si), % 0 to 0.9
0 to 0.1
Tin (Sn), % 0
0 to 0.020
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.8