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EN-MC21220 Magnesium vs. C83400 Brass

EN-MC21220 magnesium belongs to the magnesium alloys classification, while C83400 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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-MC21220 magnesium and the bottom bar is C83400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
110
Elongation at Break, % 11
30
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
42
Tensile Strength: Ultimate (UTS), MPa 210
240
Tensile Strength: Yield (Proof), MPa 120
69

Thermal Properties

Latent Heat of Fusion, J/g 350
200
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
1040
Melting Onset (Solidus), °C 540
1020
Specific Heat Capacity, J/kg-K 1000
380
Thermal Conductivity, W/m-K 65
190
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
44
Electrical Conductivity: Equal Weight (Specific), % IACS 87
46

Otherwise Unclassified Properties

Base Metal Price, % relative 12
29
Density, g/cm3 1.7
8.7
Embodied Carbon, kg CO2/kg material 23
2.7
Embodied Energy, MJ/kg 160
43
Embodied Water, L/kg 990
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
55
Resilience: Unit (Modulus of Resilience), kJ/m3 160
21
Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 71
19
Strength to Weight: Axial, points 34
7.7
Strength to Weight: Bending, points 46
9.9
Thermal Diffusivity, mm2/s 39
57
Thermal Shock Resistance, points 12
8.4

Alloy Composition


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Aluminum (Al), % 4.4 to 5.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Copper (Cu), % 0 to 0.010
88 to 92
Iron (Fe), % 0 to 0.0050
0 to 0.25
Lead (Pb), % 0
0 to 0.5
Magnesium (Mg), % 93.5 to 95.5
0
Manganese (Mn), % 0.1 to 0.6
0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.3
8.0 to 12
Residuals, % 0 to 0.010
0 to 0.7