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A242.0 Aluminum vs. C66900 Brass

A242.0 aluminum belongs to the aluminum alloys classification, while C66900 brass belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 C66900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
120
Elongation at Break, % 1.6
1.1 to 26
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
45
Tensile Strength: Ultimate (UTS), MPa 220
460 to 770

Thermal Properties

Latent Heat of Fusion, J/g 390
190
Maximum Temperature: Mechanical, °C 210
150
Melting Completion (Liquidus), °C 680
860
Melting Onset (Solidus), °C 550
850
Specific Heat Capacity, J/kg-K 870
400
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
23
Density, g/cm3 3.1
8.2
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1130
310

Common Calculations

Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 45
20
Strength to Weight: Axial, points 20
15 to 26
Strength to Weight: Bending, points 26
16 to 23
Thermal Shock Resistance, points 9.3
14 to 23

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Chromium (Cr), % 0.15 to 0.25
0
Copper (Cu), % 3.7 to 4.5
62.5 to 64.5
Iron (Fe), % 0 to 0.8
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
11.5 to 12.5
Nickel (Ni), % 1.8 to 2.3
0
Silicon (Si), % 0 to 0.6
0
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
22.5 to 26
Residuals, % 0
0 to 0.2