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771.0 Aluminum vs. C87500 Brass

771.0 aluminum belongs to the aluminum alloys classification, while C87500 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 771.0 aluminum and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
110
Elongation at Break, % 1.7 to 6.5
18
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
42
Tensile Strength: Ultimate (UTS), MPa 250 to 370
460
Tensile Strength: Yield (Proof), MPa 210 to 350
190

Thermal Properties

Latent Heat of Fusion, J/g 380
260
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 630
920
Melting Onset (Solidus), °C 620
820
Specific Heat Capacity, J/kg-K 870
410
Thermal Conductivity, W/m-K 140 to 150
28
Thermal Expansion, µm/m-K 24
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
6.7
Electrical Conductivity: Equal Weight (Specific), % IACS 82
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
27
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 8.0
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1130
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4 to 20
67
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 900
160
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 46
19
Strength to Weight: Axial, points 23 to 35
16
Strength to Weight: Bending, points 29 to 39
16
Thermal Diffusivity, mm2/s 54 to 58
8.3
Thermal Shock Resistance, points 11 to 16
17

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
0 to 0.5
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
79 to 85
Iron (Fe), % 0 to 0.15
0
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 0.8 to 1.0
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 0 to 0.15
3.0 to 5.0
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 6.5 to 7.5
12 to 16
Residuals, % 0
0 to 0.5