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EN-MC32110 Magnesium vs. 7049 Aluminum

EN-MC32110 magnesium belongs to the magnesium alloys classification, while 7049 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC32110 magnesium and the bottom bar is 7049 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
140
Elastic (Young's, Tensile) Modulus, GPa 49
70
Elongation at Break, % 2.2
6.2 to 7.0
Fatigue Strength, MPa 80
160 to 170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 19
27
Shear Strength, MPa 120
300 to 310
Tensile Strength: Ultimate (UTS), MPa 220
510 to 530
Tensile Strength: Yield (Proof), MPa 140
420 to 450

Thermal Properties

Latent Heat of Fusion, J/g 330
370
Maximum Temperature: Mechanical, °C 99
180
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 500
480
Specific Heat Capacity, J/kg-K 950
860
Thermal Conductivity, W/m-K 120
130
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
36
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
10
Density, g/cm3 2.1
3.1
Embodied Carbon, kg CO2/kg material 22
8.1
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 920
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
31 to 34
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1270 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
45
Strength to Weight: Axial, points 29
46 to 47
Strength to Weight: Bending, points 38
46 to 47
Thermal Diffusivity, mm2/s 58
51
Thermal Shock Resistance, points 12
22 to 23

Alloy Composition

Aluminum (Al), % 0 to 0.2
85.7 to 89.5
Chromium (Cr), % 0
0.1 to 0.22
Copper (Cu), % 2.4 to 3.0
1.2 to 1.9
Iron (Fe), % 0 to 0.050
0 to 0.35
Magnesium (Mg), % 89.3 to 91.9
2.0 to 2.9
Manganese (Mn), % 0.25 to 0.75
0 to 0.2
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.2
0 to 0.25
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 5.5 to 6.5
7.2 to 8.2
Residuals, % 0
0 to 0.15