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1085 Aluminum vs. C23000 Brass

1085 aluminum belongs to the aluminum alloys classification, while C23000 brass belongs to the copper alloys. There are 29 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 1085 aluminum and the bottom bar is C23000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 4.5 to 39
2.9 to 47
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 48 to 79
220 to 340
Tensile Strength: Ultimate (UTS), MPa 73 to 140
280 to 590
Tensile Strength: Yield (Proof), MPa 17 to 120
83 to 480

Thermal Properties

Latent Heat of Fusion, J/g 400
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 640
1030
Melting Onset (Solidus), °C 640
990
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 230
160
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
37
Electrical Conductivity: Equal Weight (Specific), % IACS 200
39

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 1200
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.8 to 21
6.2 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 110
31 to 1040
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 7.5 to 14
8.9 to 19
Strength to Weight: Bending, points 14 to 22
11 to 18
Thermal Diffusivity, mm2/s 94
48
Thermal Shock Resistance, points 3.3 to 6.1
9.4 to 20

Alloy Composition

Aluminum (Al), % 99.85 to 100
0
Copper (Cu), % 0 to 0.030
84 to 86
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.12
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0 to 0.020
0
Silicon (Si), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.020
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.030
13.7 to 16
Residuals, % 0
0 to 0.2