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EN-MC65120 Magnesium vs. 7076 Aluminum

EN-MC65120 magnesium belongs to the magnesium alloys classification, while 7076 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC65120 magnesium and the bottom bar is 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
160
Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 3.1
6.2
Fatigue Strength, MPa 80
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
27
Shear Strength, MPa 92
310
Tensile Strength: Ultimate (UTS), MPa 160
530
Tensile Strength: Yield (Proof), MPa 110
460

Thermal Properties

Latent Heat of Fusion, J/g 330
380
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 590
630
Melting Onset (Solidus), °C 520
460
Specific Heat Capacity, J/kg-K 970
860
Thermal Conductivity, W/m-K 100
140
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.5
Density, g/cm3 1.9
3.0
Embodied Carbon, kg CO2/kg material 25
8.0
Embodied Energy, MJ/kg 190
150
Embodied Water, L/kg 930
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.4
31
Resilience: Unit (Modulus of Resilience), kJ/m3 140
1510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
45
Strength to Weight: Axial, points 23
49
Strength to Weight: Bending, points 34
48
Thermal Diffusivity, mm2/s 56
54
Thermal Shock Resistance, points 9.8
23

Alloy Composition

Aluminum (Al), % 0
86.9 to 91.2
Copper (Cu), % 0 to 0.030
0.3 to 1.0
Iron (Fe), % 0 to 0.010
0 to 0.6
Magnesium (Mg), % 91.8 to 95.1
1.2 to 2.0
Manganese (Mn), % 0 to 0.15
0.3 to 0.8
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, % 2.5 to 4.0
0
Zinc (Zn), % 2.0 to 3.0
7.0 to 8.0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.15