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3105 Aluminum vs. C84500 Brass

3105 aluminum belongs to the aluminum alloys classification, while C84500 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 3105 aluminum and the bottom bar is C84500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 29 to 67
55
Elastic (Young's, Tensile) Modulus, GPa 69
100
Elongation at Break, % 1.1 to 20
28
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
39
Tensile Strength: Ultimate (UTS), MPa 120 to 240
240
Tensile Strength: Yield (Proof), MPa 46 to 220
97

Thermal Properties

Latent Heat of Fusion, J/g 400
180
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 660
980
Melting Onset (Solidus), °C 640
840
Specific Heat Capacity, J/kg-K 900
360
Thermal Conductivity, W/m-K 170
72
Thermal Expansion, µm/m-K 24
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
16
Electrical Conductivity: Equal Weight (Specific), % IACS 140
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.8
8.7
Embodied Carbon, kg CO2/kg material 8.2
2.9
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1180
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
54
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
45
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12 to 24
7.7
Strength to Weight: Bending, points 20 to 31
9.8
Thermal Diffusivity, mm2/s 68
23
Thermal Shock Resistance, points 5.2 to 11
8.6

Alloy Composition

Aluminum (Al), % 96 to 99.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.3
77 to 79
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 0
6.0 to 7.5
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.0 to 4.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
10 to 14
Residuals, % 0
0 to 0.7