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7020 Aluminum vs. C95300 Bronze

7020 aluminum belongs to the aluminum alloys classification, while C95300 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 7020 aluminum and the bottom bar is C95300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
120 to 170
Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
14 to 25
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
42
Tensile Strength: Ultimate (UTS), MPa 190 to 390
520 to 610
Tensile Strength: Yield (Proof), MPa 120 to 310
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 380
230
Maximum Temperature: Mechanical, °C 210
220
Melting Completion (Liquidus), °C 650
1050
Melting Onset (Solidus), °C 610
1040
Specific Heat Capacity, J/kg-K 880
440
Thermal Conductivity, W/m-K 150
63
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
13
Electrical Conductivity: Equal Weight (Specific), % IACS 120
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.9
8.3
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1150
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
73 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
170 to 420
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 18 to 37
17 to 21
Strength to Weight: Bending, points 25 to 41
17 to 19
Thermal Diffusivity, mm2/s 59
17
Thermal Shock Resistance, points 8.3 to 17
19 to 22

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
9.0 to 11
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
86.5 to 90.2
Iron (Fe), % 0 to 0.4
0.8 to 1.5
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Silicon (Si), % 0 to 0.35
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 1.0