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3203 Aluminum vs. C69430 Brass

3203 aluminum belongs to the aluminum alloys classification, while C69430 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (1, 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 3203 aluminum and the bottom bar is C69430 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 4.5 to 29
17
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
42
Shear Strength, MPa 72 to 120
350
Tensile Strength: Ultimate (UTS), MPa 110 to 200
570
Tensile Strength: Yield (Proof), MPa 39 to 190
280

Thermal Properties

Latent Heat of Fusion, J/g 400
260
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 650
920
Melting Onset (Solidus), °C 620
820
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 170
26
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
27
Density, g/cm3 2.8
8.3
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1180
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0 to 25
80
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 250
340
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 11 to 20
19
Strength to Weight: Bending, points 19 to 28
18
Thermal Diffusivity, mm2/s 70
7.7
Thermal Shock Resistance, points 4.9 to 8.8
20

Alloy Composition

Aluminum (Al), % 96.9 to 99
0
Arsenic (As), % 0
0.030 to 0.060
Copper (Cu), % 0 to 0.050
80 to 83
Iron (Fe), % 0 to 0.7
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Manganese (Mn), % 1.0 to 1.5
0
Silicon (Si), % 0 to 0.6
3.5 to 4.5
Zinc (Zn), % 0 to 0.1
11.4 to 16.5
Residuals, % 0
0 to 0.5