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C34500 Brass vs. 7049A Aluminum

C34500 brass belongs to the copper alloys classification, while 7049A 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 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
71
Elongation at Break, % 12 to 28
5.0 to 5.7
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 40
27
Shear Strength, MPa 220 to 260
340 to 350
Tensile Strength: Ultimate (UTS), MPa 340 to 430
580 to 590
Tensile Strength: Yield (Proof), MPa 120 to 180
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 170
370
Maximum Temperature: Mechanical, °C 120
200
Melting Completion (Liquidus), °C 910
640
Melting Onset (Solidus), °C 890
430
Specific Heat Capacity, J/kg-K 380
850
Thermal Conductivity, W/m-K 120
130
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
40
Electrical Conductivity: Equal Weight (Specific), % IACS 29
120

Otherwise Unclassified Properties

Base Metal Price, % relative 24
10
Density, g/cm3 8.2
3.1
Embodied Carbon, kg CO2/kg material 2.6
8.2
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 320
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42 to 75
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 160
1800 to 1990
Stiffness to Weight: Axial, points 7.1
13
Stiffness to Weight: Bending, points 19
44
Strength to Weight: Axial, points 12 to 15
52 to 53
Strength to Weight: Bending, points 13 to 16
50 to 51
Thermal Diffusivity, mm2/s 37
50
Thermal Shock Resistance, points 11 to 14
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 62 to 65
1.2 to 1.9
Iron (Fe), % 0 to 0.15
0 to 0.5
Lead (Pb), % 1.5 to 2.5
0
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0
0 to 0.5
Silicon (Si), % 0
0 to 0.4
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 32 to 36.5
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15