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7020 Aluminum vs. C26800 Brass

7020 aluminum belongs to the aluminum alloys classification, while C26800 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 C26800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
40
Tensile Strength: Ultimate (UTS), MPa 190 to 390
310 to 650

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Maximum Temperature: Mechanical, °C 210
130
Melting Completion (Liquidus), °C 650
930
Melting Onset (Solidus), °C 610
900
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
27
Electrical Conductivity: Equal Weight (Specific), % IACS 120
30

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.9
8.1
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1150
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 18 to 37
11 to 22
Strength to Weight: Bending, points 25 to 41
13 to 21
Thermal Diffusivity, mm2/s 59
37
Thermal Shock Resistance, points 8.3 to 17
10 to 22

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
64 to 68.5
Iron (Fe), % 0 to 0.4
0 to 0.050
Lead (Pb), % 0
0 to 0.15
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
31 to 36
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.3