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6063A Aluminum vs. C66900 Brass

6063A 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 6063A aluminum and the bottom bar is C66900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
120
Elongation at Break, % 6.7 to 18
1.1 to 26
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
45
Shear Strength, MPa 78 to 150
290 to 440
Tensile Strength: Ultimate (UTS), MPa 130 to 260
460 to 770
Tensile Strength: Yield (Proof), MPa 55 to 200
330 to 760

Thermal Properties

Latent Heat of Fusion, J/g 400
190
Maximum Temperature: Mechanical, °C 160
150
Melting Completion (Liquidus), °C 640
860
Melting Onset (Solidus), °C 620
850
Specific Heat Capacity, J/kg-K 900
400
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 54
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
3.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.7
8.2
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1190
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 21
4.6 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 22 to 280
460 to 2450
Stiffness to Weight: Axial, points 14
8.1
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 13 to 26
15 to 26
Strength to Weight: Bending, points 21 to 33
16 to 23
Thermal Shock Resistance, points 5.6 to 11
14 to 23

Alloy Composition

Aluminum (Al), % 97.5 to 99
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.1
62.5 to 64.5
Iron (Fe), % 0.15 to 0.35
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.6 to 0.9
0
Manganese (Mn), % 0 to 0.15
11.5 to 12.5
Silicon (Si), % 0.3 to 0.6
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.15
22.5 to 26
Residuals, % 0
0 to 0.2