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5086 Aluminum vs. EN-MC21320 Magnesium

5086 aluminum belongs to the aluminum alloys classification, while EN-MC21320 magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 5086 aluminum and the bottom bar is EN-MC21320 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65 to 100
68
Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 1.7 to 20
7.5
Fatigue Strength, MPa 88 to 180
95
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 160 to 230
130
Tensile Strength: Ultimate (UTS), MPa 270 to 390
230
Tensile Strength: Yield (Proof), MPa 110 to 320
140

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 190
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 31
17
Electrical Conductivity: Equal Weight (Specific), % IACS 100
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.6
Embodied Carbon, kg CO2/kg material 8.8
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.8 to 42
15
Resilience: Unit (Modulus of Resilience), kJ/m3 86 to 770
200
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
72
Strength to Weight: Axial, points 28 to 40
38
Strength to Weight: Bending, points 34 to 44
50
Thermal Diffusivity, mm2/s 52
40
Thermal Shock Resistance, points 12 to 17
13

Alloy Composition

Aluminum (Al), % 93 to 96.3
3.5 to 5.0
Chromium (Cr), % 0.050 to 0.25
0
Copper (Cu), % 0 to 0.1
0 to 0.010
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 3.5 to 4.5
92.5 to 95.9
Manganese (Mn), % 0.2 to 0.7
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.4
0.5 to 1.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0 to 0.2
Residuals, % 0
0 to 0.010