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A242.0 Aluminum vs. CC761S Brass

A242.0 aluminum belongs to the aluminum alloys classification, while CC761S brass belongs to the copper alloys. There are 26 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 A242.0 aluminum and the bottom bar is CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
150
Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 1.6
8.7
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
42
Tensile Strength: Ultimate (UTS), MPa 220
540

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 210
170
Melting Completion (Liquidus), °C 680
960
Melting Onset (Solidus), °C 550
910
Specific Heat Capacity, J/kg-K 870
410
Thermal Conductivity, W/m-K 140
27
Thermal Expansion, µm/m-K 23
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
40
Electrical Conductivity: Equal Weight (Specific), % IACS 110
43

Otherwise Unclassified Properties

Base Metal Price, % relative 12
27
Density, g/cm3 3.1
8.3
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1130
300

Common Calculations

Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 52
8.0
Thermal Shock Resistance, points 9.3
19

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
78 to 83
Iron (Fe), % 0 to 0.8
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0 to 0.2
Nickel (Ni), % 1.8 to 2.3
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.6
3.0 to 5.0
Tin (Sn), % 0
0 to 0.3
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
8.9 to 19
Residuals, % 0 to 0.15
0