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5182 Aluminum vs. EN-MC21320 Magnesium

5182 aluminum belongs to the aluminum alloys classification, while EN-MC21320 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 5182 aluminum and the bottom bar is EN-MC21320 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 1.1 to 12
7.5
Fatigue Strength, MPa 100 to 130
95
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 170 to 240
130
Tensile Strength: Ultimate (UTS), MPa 280 to 420
230
Tensile Strength: Yield (Proof), MPa 130 to 360
140

Thermal Properties

Latent Heat of Fusion, J/g 390
370
Maximum Temperature: Mechanical, °C 180
110
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 590
530
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 130
66
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
17
Electrical Conductivity: Equal Weight (Specific), % IACS 94
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.6
Embodied Carbon, kg CO2/kg material 8.9
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 49
15
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 950
200
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 51
72
Strength to Weight: Axial, points 29 to 44
38
Strength to Weight: Bending, points 36 to 47
50
Thermal Diffusivity, mm2/s 53
40
Thermal Shock Resistance, points 12 to 19
13

Alloy Composition

Aluminum (Al), % 93.2 to 95.8
3.5 to 5.0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.15
0 to 0.010
Iron (Fe), % 0 to 0.35
0 to 0.0050
Magnesium (Mg), % 4.0 to 5.0
92.5 to 95.9
Manganese (Mn), % 0.2 to 0.5
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.2
0.5 to 1.5
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.010