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7020 Aluminum vs. C84500 Brass

7020 aluminum belongs to the aluminum alloys classification, while C84500 brass 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 C84500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
55
Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 8.4 to 14
28
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 190 to 390
240
Tensile Strength: Yield (Proof), MPa 120 to 310
97

Thermal Properties

Latent Heat of Fusion, J/g 380
180
Maximum Temperature: Mechanical, °C 210
150
Melting Completion (Liquidus), °C 650
980
Melting Onset (Solidus), °C 610
840
Specific Heat Capacity, J/kg-K 880
360
Thermal Conductivity, W/m-K 150
72
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
16
Electrical Conductivity: Equal Weight (Specific), % IACS 120
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.9
8.7
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1150
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
54
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
45
Stiffness to Weight: Axial, points 13
6.6
Stiffness to Weight: Bending, points 47
18
Strength to Weight: Axial, points 18 to 37
7.7
Strength to Weight: Bending, points 25 to 41
9.8
Thermal Diffusivity, mm2/s 59
23
Thermal Shock Resistance, points 8.3 to 17
8.6

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
77 to 79
Iron (Fe), % 0 to 0.4
0 to 0.4
Lead (Pb), % 0
6.0 to 7.5
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.35
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 4.0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
10 to 14
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.7