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5082 Aluminum vs. C68700 Brass

5082 aluminum belongs to the aluminum alloys classification, while C68700 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, 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 5082 aluminum and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 25
41
Tensile Strength: Ultimate (UTS), MPa 380 to 400
390
Tensile Strength: Yield (Proof), MPa 300 to 340
140

Thermal Properties

Latent Heat of Fusion, J/g 400
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
970
Melting Onset (Solidus), °C 560
930
Specific Heat Capacity, J/kg-K 910
400
Thermal Conductivity, W/m-K 130
100
Thermal Expansion, µm/m-K 24
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
23
Electrical Conductivity: Equal Weight (Specific), % IACS 110
25

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
26
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.9
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 870
90
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 51
19
Strength to Weight: Axial, points 39 to 41
13
Strength to Weight: Bending, points 43 to 45
14
Thermal Diffusivity, mm2/s 54
30
Thermal Shock Resistance, points 17 to 18
13

Alloy Composition

Aluminum (Al), % 93.5 to 96
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
76 to 79
Iron (Fe), % 0 to 0.35
0 to 0.060
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 4.0 to 5.0
0
Manganese (Mn), % 0 to 0.15
0
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
17.8 to 22.2
Residuals, % 0
0 to 0.5