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EN-MC21320 Magnesium vs. C27000 Brass

EN-MC21320 magnesium belongs to the magnesium alloys classification, while C27000 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-MC21320 magnesium and the bottom bar is C27000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 230
370 to 650

Thermal Properties

Latent Heat of Fusion, J/g 370
180
Maximum Temperature: Mechanical, °C 110
130
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 530
900
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 66
120
Thermal Expansion, µm/m-K 26
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
27
Electrical Conductivity: Equal Weight (Specific), % IACS 91
30

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.6
8.1
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
45
Embodied Water, L/kg 980
320

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 72
19
Strength to Weight: Axial, points 38
13 to 22
Strength to Weight: Bending, points 50
14 to 21
Thermal Diffusivity, mm2/s 40
37
Thermal Shock Resistance, points 13
12 to 22

Alloy Composition

Aluminum (Al), % 3.5 to 5.0
0
Copper (Cu), % 0 to 0.010
63 to 68.5
Iron (Fe), % 0 to 0.0050
0 to 0.1
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
31 to 37
Residuals, % 0 to 0.010
0 to 0.3