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390.0 Aluminum vs. C68800 Brass

390.0 aluminum belongs to the aluminum alloys classification, while C68800 brass belongs to the copper alloys. There are 28 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 390.0 aluminum and the bottom bar is C68800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
110
Elongation at Break, % 1.0
2.0 to 36
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
41
Tensile Strength: Ultimate (UTS), MPa 280 to 300
570 to 890
Tensile Strength: Yield (Proof), MPa 240 to 270
390 to 790

Thermal Properties

Latent Heat of Fusion, J/g 640
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 650
960
Melting Onset (Solidus), °C 560
950
Specific Heat Capacity, J/kg-K 880
400
Thermal Conductivity, W/m-K 130
40
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24 to 25
18
Electrical Conductivity: Equal Weight (Specific), % IACS 79 to 83
20

Otherwise Unclassified Properties

Base Metal Price, % relative 11
26
Density, g/cm3 2.7
8.2
Embodied Carbon, kg CO2/kg material 7.3
2.8
Embodied Energy, MJ/kg 130
48
Embodied Water, L/kg 950
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 2.9
16 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 470
710 to 2860
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 52
19
Strength to Weight: Axial, points 28 to 30
19 to 30
Strength to Weight: Bending, points 35 to 36
19 to 25
Thermal Diffusivity, mm2/s 56
12
Thermal Shock Resistance, points 14 to 15
19 to 30

Alloy Composition

Aluminum (Al), % 74.5 to 79.6
3.0 to 3.8
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 4.0 to 5.0
70.8 to 75.5
Iron (Fe), % 0 to 1.3
0 to 0.2
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 16 to 18
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
21.3 to 24.1
Residuals, % 0
0 to 0.5