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EN-MC35110 Magnesium vs. 7178 Aluminum

EN-MC35110 magnesium belongs to the magnesium alloys classification, while 7178 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-MC35110 magnesium and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
71
Elongation at Break, % 3.1
4.5 to 12
Fatigue Strength, MPa 110
120 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
27
Shear Strength, MPa 130
140 to 380
Tensile Strength: Ultimate (UTS), MPa 230
240 to 640
Tensile Strength: Yield (Proof), MPa 150
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 330
370
Maximum Temperature: Mechanical, °C 140
180
Melting Completion (Liquidus), °C 600
630
Melting Onset (Solidus), °C 520
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 27
31
Electrical Conductivity: Equal Weight (Specific), % IACS 130
91

Otherwise Unclassified Properties

Base Metal Price, % relative 18
10
Density, g/cm3 1.9
3.1
Embodied Carbon, kg CO2/kg material 24
8.2
Embodied Energy, MJ/kg 170
150
Embodied Water, L/kg 940
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 260
110 to 2220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
45
Strength to Weight: Axial, points 34
21 to 58
Strength to Weight: Bending, points 44
28 to 54
Thermal Diffusivity, mm2/s 61
47
Thermal Shock Resistance, points 14
10 to 28

Alloy Composition

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 to 95.4
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
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 0.75 to 1.8
0
Zinc (Zn), % 3.5 to 5.0
6.3 to 7.3
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15