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6101 Aluminum vs. C68000 Brass

6101 aluminum belongs to the aluminum alloys classification, while C68000 brass belongs to the copper alloys. There are 19 material properties with values for both materials. Properties with values for just one material (10, 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 6101 aluminum and the bottom bar is C68000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
100
Elongation at Break, % 10 to 25
27
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
40

Thermal Properties

Latent Heat of Fusion, J/g 400
170
Maximum Temperature: Mechanical, °C 160
120
Melting Completion (Liquidus), °C 650
880
Melting Onset (Solidus), °C 620
870
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 220 to 230
96
Thermal Expansion, µm/m-K 23
21

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
23
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1190
330

Common Calculations

Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 50
20
Thermal Diffusivity, mm2/s 89 to 93
31

Alloy Composition

Aluminum (Al), % 97.6 to 99.4
0 to 0.010
Boron (B), % 0 to 0.060
0
Chromium (Cr), % 0 to 0.030
0
Copper (Cu), % 0 to 0.1
56 to 60
Iron (Fe), % 0 to 0.5
0.25 to 1.3
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.35 to 0.8
0
Manganese (Mn), % 0 to 0.030
0.010 to 0.5
Nickel (Ni), % 0
0.2 to 0.8
Silicon (Si), % 0.3 to 0.7
0.040 to 0.15
Tin (Sn), % 0
0.75 to 1.1
Zinc (Zn), % 0 to 0.1
35.6 to 42.8
Residuals, % 0
0 to 0.5