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C67600 Bronze vs. 7021 Aluminum

C67600 bronze belongs to the copper alloys classification, while 7021 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 C67600 bronze and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
69
Elongation at Break, % 13 to 33
9.4
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 40
26
Shear Strength, MPa 270 to 350
270
Tensile Strength: Ultimate (UTS), MPa 430 to 570
460
Tensile Strength: Yield (Proof), MPa 170 to 380
390

Thermal Properties

Latent Heat of Fusion, J/g 170
380
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 890
630
Melting Onset (Solidus), °C 870
510
Specific Heat Capacity, J/kg-K 380
870
Thermal Conductivity, W/m-K 110
150
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
38
Electrical Conductivity: Equal Weight (Specific), % IACS 27
120

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.5
Density, g/cm3 8.0
2.9
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 330
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 130
41
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
1110
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 20
47
Strength to Weight: Axial, points 15 to 20
44
Strength to Weight: Bending, points 16 to 19
45
Thermal Diffusivity, mm2/s 35
59
Thermal Shock Resistance, points 14 to 19
20

Alloy Composition

Aluminum (Al), % 0
90.7 to 93.7
Chromium (Cr), % 0
0 to 0.050
Copper (Cu), % 57 to 60
0 to 0.25
Iron (Fe), % 0.4 to 1.3
0 to 0.4
Lead (Pb), % 0.5 to 1.0
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0.050 to 0.5
0 to 0.1
Silicon (Si), % 0
0 to 0.25
Tin (Sn), % 0.5 to 1.5
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 35.2 to 41.6
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0
0 to 0.15