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EN-MC21210 Magnesium vs. 5040 Aluminum

EN-MC21210 magnesium belongs to the magnesium alloys classification, while 5040 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC21210 magnesium and the bottom bar is 5040 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
66 to 74
Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 14
5.7 to 6.8
Fatigue Strength, MPa 70
100 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 110
140 to 150
Tensile Strength: Ultimate (UTS), MPa 190
240 to 260
Tensile Strength: Yield (Proof), MPa 90
190 to 230

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 100
190
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 570
600
Specific Heat Capacity, J/kg-K 1000
900
Thermal Conductivity, W/m-K 120
160
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
41
Electrical Conductivity: Equal Weight (Specific), % IACS 130
130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.6
2.8
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
14 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 92
260 to 380
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
50
Strength to Weight: Axial, points 32
24 to 26
Strength to Weight: Bending, points 44
31 to 32
Thermal Diffusivity, mm2/s 76
64
Thermal Shock Resistance, points 11
10 to 11

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
95.2 to 98
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 0 to 0.010
0 to 0.25
Iron (Fe), % 0 to 0.0050
0 to 0.7
Magnesium (Mg), % 96.3 to 98.3
1.0 to 1.5
Manganese (Mn), % 0.1 to 0.7
0.9 to 1.4
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.3
Zinc (Zn), % 0 to 0.2
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15