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6066 Aluminum vs. C66900 Brass

6066 aluminum belongs to the aluminum alloys classification, while C66900 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 6066 aluminum and the bottom bar is C66900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
120
Elongation at Break, % 7.8 to 17
1.1 to 26
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
45
Shear Strength, MPa 95 to 240
290 to 440
Tensile Strength: Ultimate (UTS), MPa 160 to 400
460 to 770
Tensile Strength: Yield (Proof), MPa 93 to 360
330 to 760

Thermal Properties

Latent Heat of Fusion, J/g 410
190
Maximum Temperature: Mechanical, °C 170
150
Melting Completion (Liquidus), °C 650
860
Melting Onset (Solidus), °C 560
850
Specific Heat Capacity, J/kg-K 890
400
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
3.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.8
8.2
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1160
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 52
4.6 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 61 to 920
460 to 2450
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 49
20
Strength to Weight: Axial, points 16 to 39
15 to 26
Strength to Weight: Bending, points 23 to 43
16 to 23
Thermal Shock Resistance, points 6.9 to 17
14 to 23

Alloy Composition

Aluminum (Al), % 93 to 97
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0.7 to 1.2
62.5 to 64.5
Iron (Fe), % 0 to 0.5
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0.6 to 1.1
11.5 to 12.5
Silicon (Si), % 0.9 to 1.8
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
22.5 to 26
Residuals, % 0
0 to 0.2