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C90200 Bronze vs. 7021 Aluminum

C90200 bronze belongs to the copper alloys classification, while 7021 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 C90200 bronze and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
69
Elongation at Break, % 30
9.4
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 41
26
Tensile Strength: Ultimate (UTS), MPa 260
460
Tensile Strength: Yield (Proof), MPa 110
390

Thermal Properties

Latent Heat of Fusion, J/g 200
380
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 1050
630
Melting Onset (Solidus), °C 880
510
Specific Heat Capacity, J/kg-K 370
870
Thermal Conductivity, W/m-K 62
150
Thermal Expansion, µm/m-K 18
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
38
Electrical Conductivity: Equal Weight (Specific), % IACS 13
120

Otherwise Unclassified Properties

Base Metal Price, % relative 34
9.5
Density, g/cm3 8.8
2.9
Embodied Carbon, kg CO2/kg material 3.3
8.3
Embodied Energy, MJ/kg 53
150
Embodied Water, L/kg 370
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63
41
Resilience: Unit (Modulus of Resilience), kJ/m3 55
1110
Stiffness to Weight: Axial, points 7.0
13
Stiffness to Weight: Bending, points 18
47
Strength to Weight: Axial, points 8.3
44
Strength to Weight: Bending, points 10
45
Thermal Diffusivity, mm2/s 19
59
Thermal Shock Resistance, points 9.5
20

Alloy Composition

Aluminum (Al), % 0 to 0.0050
90.7 to 93.7
Antimony (Sb), % 0 to 0.2
0
Chromium (Cr), % 0
0 to 0.050
Copper (Cu), % 91 to 94
0 to 0.25
Iron (Fe), % 0 to 0.2
0 to 0.4
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.0050
0 to 0.25
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 6.0 to 8.0
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.5
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0
0 to 0.15