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EN-MC65220 Magnesium vs. 4047 Aluminum

EN-MC65220 magnesium belongs to the magnesium alloys classification, while 4047 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN-MC65220 magnesium and the bottom bar is 4047 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
72
Elongation at Break, % 2.2
3.4
Fatigue Strength, MPa 110
45
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 150
69
Tensile Strength: Ultimate (UTS), MPa 270
120
Tensile Strength: Yield (Proof), MPa 200
64

Thermal Properties

Latent Heat of Fusion, J/g 340
570
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 610
580
Melting Onset (Solidus), °C 550
580
Specific Heat Capacity, J/kg-K 980
900
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

Otherwise Unclassified Properties

Base Metal Price, % relative 80
9.5
Density, g/cm3 1.9
2.5
Embodied Carbon, kg CO2/kg material 27
7.7
Embodied Energy, MJ/kg 210
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
3.5
Resilience: Unit (Modulus of Resilience), kJ/m3 450
28
Stiffness to Weight: Axial, points 13
16
Stiffness to Weight: Bending, points 62
55
Strength to Weight: Axial, points 40
13
Strength to Weight: Bending, points 49
21
Thermal Diffusivity, mm2/s 61
59
Thermal Shock Resistance, points 17
5.6

Alloy Composition


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Aluminum (Al), % 0
85.3 to 89
Copper (Cu), % 0.050 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.010
0 to 0.8
Magnesium (Mg), % 93.8 to 96.8
0 to 0.1
Manganese (Mn), % 0 to 0.15
0 to 0.15
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
11 to 13
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0 to 0.2
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15