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EN-MC21230 Magnesium vs. C34000 Brass

EN-MC21230 magnesium belongs to the magnesium alloys classification, while C34000 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-MC21230 magnesium and the bottom bar is C34000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 220
340 to 650

Thermal Properties

Latent Heat of Fusion, J/g 350
170
Maximum Temperature: Mechanical, °C 120
120
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 520
890
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 72
120
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
26
Electrical Conductivity: Equal Weight (Specific), % IACS 63
29

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.7
8.1
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 990
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 36
11 to 22
Strength to Weight: Bending, points 48
13 to 21
Thermal Diffusivity, mm2/s 43
37
Thermal Shock Resistance, points 13
11 to 22

Alloy Composition

Aluminum (Al), % 5.5 to 8.5
0
Copper (Cu), % 0 to 0.010
62 to 65
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
0.8 to 1.5
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
33 to 37.2
Residuals, % 0 to 0.010
0 to 0.4