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C67400 Bronze vs. 8021 Aluminum

C67400 bronze belongs to the copper alloys classification, while 8021 aluminum belongs to the aluminum 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 C67400 bronze and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 22 to 28
2.3
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 480 to 610
160
Tensile Strength: Yield (Proof), MPa 250 to 370
130

Thermal Properties

Latent Heat of Fusion, J/g 190
400
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 890
650
Melting Onset (Solidus), °C 870
640
Specific Heat Capacity, J/kg-K 400
900
Thermal Conductivity, W/m-K 100
220
Thermal Expansion, µm/m-K 21
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
56
Electrical Conductivity: Equal Weight (Specific), % IACS 26
180

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.0
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 330
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 660
130
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 20
49
Strength to Weight: Axial, points 17 to 22
16
Strength to Weight: Bending, points 17 to 20
23
Thermal Diffusivity, mm2/s 32
88
Thermal Shock Resistance, points 16 to 20
7.0

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
98 to 98.8
Copper (Cu), % 57 to 60
0 to 0.050
Iron (Fe), % 0 to 0.35
1.2 to 1.7
Lead (Pb), % 0 to 0.5
0
Manganese (Mn), % 2.0 to 3.5
0
Nickel (Ni), % 0 to 0.25
0
Silicon (Si), % 0.5 to 1.5
0 to 0.15
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 31.1 to 40
0
Residuals, % 0
0 to 0.15