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3105 Aluminum vs. C42500 Brass

3105 aluminum belongs to the aluminum alloys classification, while C42500 brass belongs to the copper alloys. There are 29 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 3105 aluminum and the bottom bar is C42500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 1.1 to 20
2.0 to 49
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 77 to 140
220 to 360
Tensile Strength: Ultimate (UTS), MPa 120 to 240
310 to 630
Tensile Strength: Yield (Proof), MPa 46 to 220
120 to 590

Thermal Properties

Latent Heat of Fusion, J/g 400
200
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 660
1030
Melting Onset (Solidus), °C 640
1010
Specific Heat Capacity, J/kg-K 900
380
Thermal Conductivity, W/m-K 170
120
Thermal Expansion, µm/m-K 24
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
28
Electrical Conductivity: Equal Weight (Specific), % IACS 140
29

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
30
Density, g/cm3 2.8
8.7
Embodied Carbon, kg CO2/kg material 8.2
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1180
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 19
12 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 15 to 340
64 to 1570
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 50
18
Strength to Weight: Axial, points 12 to 24
9.9 to 20
Strength to Weight: Bending, points 20 to 31
12 to 19
Thermal Diffusivity, mm2/s 68
36
Thermal Shock Resistance, points 5.2 to 11
11 to 22

Alloy Composition

Aluminum (Al), % 96 to 99.5
0
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.3
87 to 90
Iron (Fe), % 0 to 0.7
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Phosphorus (P), % 0
0 to 0.35
Silicon (Si), % 0 to 0.6
0
Tin (Sn), % 0
1.5 to 3.0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
6.1 to 11.5
Residuals, % 0
0 to 0.5