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7020 Aluminum vs. C37700 Brass

7020 aluminum belongs to the aluminum alloys classification, while C37700 brass belongs to the copper alloys. There are 29 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 7020 aluminum and the bottom bar is C37700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
100
Elongation at Break, % 8.4 to 14
40
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
39
Shear Strength, MPa 110 to 230
270
Tensile Strength: Ultimate (UTS), MPa 190 to 390
400
Tensile Strength: Yield (Proof), MPa 120 to 310
160

Thermal Properties

Latent Heat of Fusion, J/g 380
170
Maximum Temperature: Mechanical, °C 210
120
Melting Completion (Liquidus), °C 650
890
Melting Onset (Solidus), °C 610
880
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 23
21

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
23
Density, g/cm3 2.9
8.1
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
120
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 18 to 37
14
Strength to Weight: Bending, points 25 to 41
15
Thermal Diffusivity, mm2/s 59
39
Thermal Shock Resistance, points 8.3 to 17
13

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
58 to 61
Iron (Fe), % 0 to 0.4
0 to 0.3
Lead (Pb), % 0
1.5 to 2.5
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
35.7 to 40.5
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.5