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EN AC-21100 Aluminum vs. C24000 Brass

EN AC-21100 aluminum belongs to the aluminum alloys classification, while C24000 brass belongs to the copper alloys. There are 24 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 EN AC-21100 aluminum and the bottom bar is C24000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
42
Tensile Strength: Ultimate (UTS), MPa 340 to 350
310 to 640

Thermal Properties

Latent Heat of Fusion, J/g 390
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 670
1000
Melting Onset (Solidus), °C 550
970
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 130
140
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
32
Electrical Conductivity: Equal Weight (Specific), % IACS 100
34

Otherwise Unclassified Properties

Base Metal Price, % relative 11
27
Density, g/cm3 3.0
8.5
Embodied Carbon, kg CO2/kg material 8.0
2.6
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1150
320

Common Calculations

Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 46
19
Strength to Weight: Axial, points 31 to 33
10 to 21
Strength to Weight: Bending, points 36 to 37
12 to 20
Thermal Diffusivity, mm2/s 48
43
Thermal Shock Resistance, points 15
10 to 22

Alloy Composition


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Aluminum (Al), % 93.4 to 95.7
0
Copper (Cu), % 4.2 to 5.2
78.5 to 81.5
Iron (Fe), % 0 to 0.19
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.55
0
Silicon (Si), % 0 to 0.18
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
18.2 to 21.5
Residuals, % 0 to 0.1
0 to 0.2