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A380.0 Aluminum vs. C68700 Brass

A380.0 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 (6, 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 A380.0 aluminum and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 290
390
Tensile Strength: Yield (Proof), MPa 160
140

Thermal Properties

Latent Heat of Fusion, J/g 510
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 590
970
Melting Onset (Solidus), °C 550
930
Specific Heat Capacity, J/kg-K 870
400
Thermal Conductivity, W/m-K 96
100
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
23
Electrical Conductivity: Equal Weight (Specific), % IACS 78
25

Otherwise Unclassified Properties

Base Metal Price, % relative 11
26
Density, g/cm3 2.9
8.3
Embodied Carbon, kg CO2/kg material 7.5
2.8
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 1040
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 180
90
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 48
19
Strength to Weight: Axial, points 28
13
Strength to Weight: Bending, points 34
14
Thermal Diffusivity, mm2/s 38
30
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 80.3 to 89.5
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Copper (Cu), % 3.0 to 4.0
76 to 79
Iron (Fe), % 0 to 1.3
0 to 0.060
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0
Silicon (Si), % 7.5 to 9.5
0
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
17.8 to 22.2
Residuals, % 0
0 to 0.5