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EN-MC65210 Magnesium vs. 7178 Aluminum

EN-MC65210 magnesium belongs to the magnesium alloys classification, while 7178 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN-MC65210 magnesium and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 2.8
4.5 to 12
Fatigue Strength, MPa 110
120 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
27
Shear Strength, MPa 150
140 to 380
Tensile Strength: Ultimate (UTS), MPa 270
240 to 640
Tensile Strength: Yield (Proof), MPa 200
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 340
370
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 610
630
Melting Onset (Solidus), °C 540
480
Specific Heat Capacity, J/kg-K 970
860
Thermal Conductivity, W/m-K 110
130
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
31
Electrical Conductivity: Equal Weight (Specific), % IACS 110
91

Otherwise Unclassified Properties

Density, g/cm3 2.0
3.1
Embodied Carbon, kg CO2/kg material 27
8.2
Embodied Energy, MJ/kg 220
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 450
110 to 2220
Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 59
45
Strength to Weight: Axial, points 38
21 to 58
Strength to Weight: Bending, points 47
28 to 54
Thermal Diffusivity, mm2/s 58
47
Thermal Shock Resistance, points 17
10 to 28

Alloy Composition


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Aluminum (Al), % 0
85.4 to 89.5
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 0 to 0.030
1.6 to 2.4
Iron (Fe), % 0 to 0.010
0 to 0.5
Magnesium (Mg), % 92.6 to 95.6
2.4 to 3.1
Manganese (Mn), % 0 to 0.15
0 to 0.3
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.010
0 to 0.4
Silver (Ag), % 2.0 to 3.0
0
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 2.0 to 3.0
0
Zinc (Zn), % 0 to 0.2
6.3 to 7.3
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15