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1085 Aluminum vs. C43400 Brass

1085 aluminum belongs to the aluminum alloys classification, while C43400 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C43400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
110
Elongation at Break, % 4.5 to 39
3.0 to 49
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 48 to 79
250 to 390
Tensile Strength: Ultimate (UTS), MPa 73 to 140
310 to 690
Tensile Strength: Yield (Proof), MPa 17 to 120
110 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 640
1020
Melting Onset (Solidus), °C 640
990
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 230
140
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
31
Electrical Conductivity: Equal Weight (Specific), % IACS 200
32

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
2.7
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 1200
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.8 to 21
19 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 110
57 to 1420
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 7.5 to 14
10 to 22
Strength to Weight: Bending, points 14 to 22
12 to 20
Thermal Diffusivity, mm2/s 94
41
Thermal Shock Resistance, points 3.3 to 6.1
11 to 24

Alloy Composition

Aluminum (Al), % 99.85 to 100
0
Copper (Cu), % 0 to 0.030
84 to 87
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
Tin (Sn), % 0
0.4 to 1.0
Titanium (Ti), % 0 to 0.020
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.030
11.4 to 15.6
Residuals, % 0
0 to 0.5