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C99400 Brass vs. 2018 Aluminum

C99400 brass belongs to the copper alloys classification, while 2018 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 C99400 brass and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
73
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 44
27
Tensile Strength: Ultimate (UTS), MPa 460 to 550
420
Tensile Strength: Yield (Proof), MPa 230 to 370
310

Thermal Properties

Latent Heat of Fusion, J/g 230
390
Maximum Temperature: Mechanical, °C 200
220
Melting Completion (Liquidus), °C 1070
640
Melting Onset (Solidus), °C 1020
510
Specific Heat Capacity, J/kg-K 400
870
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
40
Electrical Conductivity: Equal Weight (Specific), % IACS 17
120

Otherwise Unclassified Properties

Base Metal Price, % relative 30
11
Density, g/cm3 8.7
3.1
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
1130

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 590
670
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 19
45
Strength to Weight: Axial, points 15 to 17
38
Strength to Weight: Bending, points 15 to 17
41
Thermal Shock Resistance, points 16 to 19
19

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
89.7 to 94.4
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 83.5 to 96.5
3.5 to 4.5
Iron (Fe), % 1.0 to 3.0
0 to 1.0
Lead (Pb), % 0 to 0.25
0
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 1.0 to 3.5
1.7 to 2.3
Silicon (Si), % 0.5 to 2.0
0 to 0.9
Zinc (Zn), % 0.5 to 5.0
0 to 0.25
Residuals, % 0
0 to 0.15