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C85800 Brass vs. 3105 Aluminum

C85800 brass belongs to the copper alloys classification, while 3105 aluminum belongs to the aluminum 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 C85800 brass and the bottom bar is 3105 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
69
Elongation at Break, % 15
1.1 to 20
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 380
120 to 240
Tensile Strength: Yield (Proof), MPa 210
46 to 220

Thermal Properties

Latent Heat of Fusion, J/g 170
400
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 900
660
Melting Onset (Solidus), °C 870
640
Specific Heat Capacity, J/kg-K 380
900
Thermal Conductivity, W/m-K 84
170
Thermal Expansion, µm/m-K 20
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
44
Electrical Conductivity: Equal Weight (Specific), % IACS 22
140

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.5
Density, g/cm3 8.0
2.8
Embodied Carbon, kg CO2/kg material 2.8
8.2
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 330
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
2.6 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 210
15 to 340
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 20
50
Strength to Weight: Axial, points 13
12 to 24
Strength to Weight: Bending, points 15
20 to 31
Thermal Diffusivity, mm2/s 27
68
Thermal Shock Resistance, points 13
5.2 to 11

Alloy Composition

Aluminum (Al), % 0 to 0.55
96 to 99.5
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Chromium (Cr), % 0
0 to 0.2
Copper (Cu), % 57 to 69
0 to 0.3
Iron (Fe), % 0 to 0.5
0 to 0.7
Lead (Pb), % 0 to 1.5
0
Magnesium (Mg), % 0
0.2 to 0.8
Manganese (Mn), % 0 to 0.25
0.3 to 0.8
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.25
0 to 0.6
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 1.5
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 31 to 41
0 to 0.4
Residuals, % 0
0 to 0.15