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EN-MC21210 Magnesium vs. 7049A Aluminum

EN-MC21210 magnesium belongs to the magnesium alloys classification, while 7049A aluminum belongs to the aluminum 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 EN-MC21210 magnesium and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 14
5.0 to 5.7
Fatigue Strength, MPa 70
180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
27
Shear Strength, MPa 110
340 to 350
Tensile Strength: Ultimate (UTS), MPa 190
580 to 590
Tensile Strength: Yield (Proof), MPa 90
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 350
370
Maximum Temperature: Mechanical, °C 100
200
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 570
430
Specific Heat Capacity, J/kg-K 1000
850
Thermal Conductivity, W/m-K 120
130
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
40
Electrical Conductivity: Equal Weight (Specific), % IACS 130
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.6
3.1
Embodied Carbon, kg CO2/kg material 24
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 92
1800 to 1990
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
44
Strength to Weight: Axial, points 32
52 to 53
Strength to Weight: Bending, points 44
50 to 51
Thermal Diffusivity, mm2/s 76
50
Thermal Shock Resistance, points 11
25

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
84.6 to 89.5
Chromium (Cr), % 0
0.050 to 0.25
Copper (Cu), % 0 to 0.010
1.2 to 1.9
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 96.3 to 98.3
2.1 to 3.1
Manganese (Mn), % 0.1 to 0.7
0 to 0.5
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.4
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.2
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15