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C34500 Brass vs. 7204 Aluminum

C34500 brass belongs to the copper alloys classification, while 7204 aluminum belongs to the aluminum 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 C34500 brass and the bottom bar is 7204 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
70
Elongation at Break, % 12 to 28
11 to 13
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Shear Strength, MPa 220 to 260
130 to 220
Tensile Strength: Ultimate (UTS), MPa 340 to 430
220 to 380
Tensile Strength: Yield (Proof), MPa 120 to 180
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 170
380
Maximum Temperature: Mechanical, °C 120
210
Melting Completion (Liquidus), °C 910
640
Melting Onset (Solidus), °C 890
520
Specific Heat Capacity, J/kg-K 380
880
Thermal Conductivity, W/m-K 120
150
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
39
Electrical Conductivity: Equal Weight (Specific), % IACS 29
120

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.5
Density, g/cm3 8.2
2.9
Embodied Carbon, kg CO2/kg material 2.6
8.4
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 320
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
25 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 160
110 to 710
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 19
47
Strength to Weight: Axial, points 12 to 15
21 to 36
Strength to Weight: Bending, points 13 to 16
28 to 40
Thermal Diffusivity, mm2/s 37
58
Thermal Shock Resistance, points 11 to 14
9.4 to 16

Alloy Composition

Aluminum (Al), % 0
90.5 to 94.8
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 62 to 65
0 to 0.2
Iron (Fe), % 0 to 0.15
0 to 0.35
Lead (Pb), % 1.5 to 2.5
0
Magnesium (Mg), % 0
1.0 to 2.0
Manganese (Mn), % 0
0.2 to 0.7
Silicon (Si), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 32 to 36.5
4.0 to 5.0
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15