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C66900 Brass vs. 7020 Aluminum

C66900 brass belongs to the copper alloys classification, while 7020 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 C66900 brass and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
70
Elongation at Break, % 1.1 to 26
8.4 to 14
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 45
26
Shear Strength, MPa 290 to 440
110 to 230
Tensile Strength: Ultimate (UTS), MPa 460 to 770
190 to 390
Tensile Strength: Yield (Proof), MPa 330 to 760
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 190
380
Maximum Temperature: Mechanical, °C 150
210
Melting Completion (Liquidus), °C 860
650
Melting Onset (Solidus), °C 850
610
Specific Heat Capacity, J/kg-K 400
880
Thermal Expansion, µm/m-K 20
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
39
Electrical Conductivity: Equal Weight (Specific), % IACS 3.8
120

Otherwise Unclassified Properties

Base Metal Price, % relative 23
9.5
Density, g/cm3 8.2
2.9
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 310
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.6 to 200
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2450
110 to 690
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 20
47
Strength to Weight: Axial, points 15 to 26
18 to 37
Strength to Weight: Bending, points 16 to 23
25 to 41
Thermal Shock Resistance, points 14 to 23
8.3 to 17

Alloy Composition

Aluminum (Al), % 0
91.2 to 94.8
Chromium (Cr), % 0
0.1 to 0.35
Copper (Cu), % 62.5 to 64.5
0 to 0.2
Iron (Fe), % 0 to 0.25
0 to 0.4
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0
1.0 to 1.4
Manganese (Mn), % 11.5 to 12.5
0.050 to 0.5
Silicon (Si), % 0
0 to 0.35
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 22.5 to 26
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15