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6066 Aluminum vs. C69400 Brass

6066 aluminum belongs to the aluminum alloys classification, while C69400 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 C69400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 7.8 to 17
17
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 95 to 240
350
Tensile Strength: Ultimate (UTS), MPa 160 to 400
570
Tensile Strength: Yield (Proof), MPa 93 to 360
270

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 650
920
Melting Onset (Solidus), °C 560
820
Specific Heat Capacity, J/kg-K 890
410
Thermal Conductivity, W/m-K 150
26
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
27
Density, g/cm3 2.8
8.3
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1160
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 52
80
Resilience: Unit (Modulus of Resilience), kJ/m3 61 to 920
340
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 49
19
Strength to Weight: Axial, points 16 to 39
19
Strength to Weight: Bending, points 23 to 43
18
Thermal Diffusivity, mm2/s 61
7.7
Thermal Shock Resistance, points 6.9 to 17
20

Alloy Composition

Aluminum (Al), % 93 to 97
0
Chromium (Cr), % 0 to 0.4
0
Copper (Cu), % 0.7 to 1.2
80 to 83
Iron (Fe), % 0 to 0.5
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0.6 to 1.1
0
Silicon (Si), % 0.9 to 1.8
3.5 to 4.5
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
11.5 to 16.5
Residuals, % 0
0 to 0.5