MakeItFrom.com
Menu (ESC)

2018 Aluminum vs. EN-MC21120 Magnesium

2018 aluminum belongs to the aluminum alloys classification, while EN-MC21120 magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 2018 aluminum and the bottom bar is EN-MC21120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
63 to 75
Elastic (Young's, Tensile) Modulus, GPa 73
46
Elongation at Break, % 9.6
2.2 to 6.7
Fatigue Strength, MPa 120
84 to 96
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 270
110 to 160
Tensile Strength: Ultimate (UTS), MPa 420
200 to 270
Tensile Strength: Yield (Proof), MPa 310
130 to 170

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 220
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 510
490
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 150
76
Thermal Expansion, µm/m-K 22
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
59

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 8.1
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
5.0 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 670
180 to 320
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 45
69
Strength to Weight: Axial, points 38
31 to 43
Strength to Weight: Bending, points 41
43 to 53
Thermal Diffusivity, mm2/s 57
44
Thermal Shock Resistance, points 19
11 to 16

Alloy Composition


Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 452
Aluminum (Al), % 89.7 to 94.4
8.3 to 9.7
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.030
Iron (Fe), % 0 to 1.0
0 to 0.0050
Magnesium (Mg), % 0.45 to 0.9
88.6 to 91.3
Manganese (Mn), % 0 to 0.2
0.1 to 0.5
Nickel (Ni), % 1.7 to 2.3
0 to 0.0020
Silicon (Si), % 0 to 0.9
0 to 0.2
Zinc (Zn), % 0 to 0.25
0.35 to 1.0
Residuals, % 0 to 0.15
0 to 0.010