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7075 Aluminum vs. C84000 Brass

7075 aluminum belongs to the aluminum alloys classification, while C84000 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 7075 aluminum and the bottom bar is C84000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 1.8 to 12
27
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
42
Tensile Strength: Ultimate (UTS), MPa 240 to 590
250
Tensile Strength: Yield (Proof), MPa 120 to 510
140

Thermal Properties

Latent Heat of Fusion, J/g 380
190
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 640
1040
Melting Onset (Solidus), °C 480
940
Specific Heat Capacity, J/kg-K 870
380
Thermal Conductivity, W/m-K 130
72
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
16
Electrical Conductivity: Equal Weight (Specific), % IACS 98
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
30
Density, g/cm3 3.0
8.6
Embodied Carbon, kg CO2/kg material 8.3
3.0
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1120
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 44
58
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 1870
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 46
19
Strength to Weight: Axial, points 22 to 54
8.2
Strength to Weight: Bending, points 28 to 52
10
Thermal Diffusivity, mm2/s 50
22
Thermal Shock Resistance, points 10 to 25
9.0

Alloy Composition


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Aluminum (Al), % 86.9 to 91.4
0 to 0.0050
Antimony (Sb), % 0
0 to 0.020
Boron (B), % 0
0 to 0.1
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
82 to 89
Iron (Fe), % 0 to 0.5
0 to 0.4
Lead (Pb), % 0
0 to 0.090
Magnesium (Mg), % 2.1 to 2.9
0
Manganese (Mn), % 0 to 0.3
0 to 0.010
Nickel (Ni), % 0
0.5 to 2.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0
2.0 to 4.0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
5.0 to 14
Zirconium (Zr), % 0 to 0.25
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.7