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7020 Aluminum vs. C84100 Brass

7020 aluminum belongs to the aluminum alloys classification, while C84100 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 C84100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
65
Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
13
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 190 to 390
230
Tensile Strength: Yield (Proof), MPa 120 to 310
81

Thermal Properties

Latent Heat of Fusion, J/g 380
190
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 650
1000
Melting Onset (Solidus), °C 610
810
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
23
Electrical Conductivity: Equal Weight (Specific), % IACS 120
25

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.9
8.5
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1150
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
24
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
30
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 18 to 37
7.4
Strength to Weight: Bending, points 25 to 41
9.7
Thermal Diffusivity, mm2/s 59
33
Thermal Shock Resistance, points 8.3 to 17
7.8

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.010
Antimony (Sb), % 0
0 to 0.050
Bismuth (Bi), % 0
0 to 0.090
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
78 to 85
Iron (Fe), % 0 to 0.4
0 to 0.3
Lead (Pb), % 0
0.050 to 0.25
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
0 to 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.35
0 to 0.010
Tin (Sn), % 0
1.5 to 4.5
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
12 to 20
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.5