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EN-MC21230 Magnesium vs. C24000 Brass

EN-MC21230 magnesium belongs to the magnesium 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 (10, 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-MC21230 magnesium and the bottom bar is C24000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
42
Tensile Strength: Ultimate (UTS), MPa 220
310 to 640

Thermal Properties

Latent Heat of Fusion, J/g 350
190
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
1000
Melting Onset (Solidus), °C 520
970
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 72
140
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
32
Electrical Conductivity: Equal Weight (Specific), % IACS 63
34

Otherwise Unclassified Properties

Base Metal Price, % relative 12
27
Density, g/cm3 1.7
8.5
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 990
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 36
10 to 21
Strength to Weight: Bending, points 48
12 to 20
Thermal Diffusivity, mm2/s 43
43
Thermal Shock Resistance, points 13
10 to 22

Alloy Composition

Aluminum (Al), % 5.5 to 8.5
0
Copper (Cu), % 0 to 0.010
78.5 to 81.5
Iron (Fe), % 0 to 0.0050
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 90.5 to 94.4
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
18.2 to 21.5
Residuals, % 0 to 0.010
0 to 0.2