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7020 Aluminum vs. C42200 Brass

7020 aluminum belongs to the aluminum alloys classification, while C42200 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 C42200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 8.4 to 14
2.0 to 46
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 110 to 230
210 to 350
Tensile Strength: Ultimate (UTS), MPa 190 to 390
300 to 610
Tensile Strength: Yield (Proof), MPa 120 to 310
100 to 570

Thermal Properties

Latent Heat of Fusion, J/g 380
200
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 650
1040
Melting Onset (Solidus), °C 610
1020
Specific Heat Capacity, J/kg-K 880
380
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
31
Electrical Conductivity: Equal Weight (Specific), % IACS 120
32

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.9
8.6
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
12 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
49 to 1460
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 18 to 37
9.5 to 19
Strength to Weight: Bending, points 25 to 41
11 to 18
Thermal Diffusivity, mm2/s 59
39
Thermal Shock Resistance, points 8.3 to 17
10 to 21

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
86 to 89
Iron (Fe), % 0 to 0.4
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Phosphorus (P), % 0
0 to 0.35
Silicon (Si), % 0 to 0.35
0
Tin (Sn), % 0
0.8 to 1.4
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
8.7 to 13.2
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.5