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EN-MC21210 Magnesium vs. 7076 Aluminum

EN-MC21210 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-MC21210 magnesium and the bottom bar is 7076 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
160
Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 14
6.2
Fatigue Strength, MPa 70
170
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
27
Shear Strength, MPa 110
310
Tensile Strength: Ultimate (UTS), MPa 190
530
Tensile Strength: Yield (Proof), MPa 90
460

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 100
170
Melting Completion (Liquidus), °C 600
630
Melting Onset (Solidus), °C 570
460
Specific Heat Capacity, J/kg-K 1000
860
Thermal Conductivity, W/m-K 120
140
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
35
Electrical Conductivity: Equal Weight (Specific), % IACS 130
100

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.6
3.0
Embodied Carbon, kg CO2/kg material 24
8.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
31
Resilience: Unit (Modulus of Resilience), kJ/m3 92
1510
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
45
Strength to Weight: Axial, points 32
49
Strength to Weight: Bending, points 44
48
Thermal Diffusivity, mm2/s 76
54
Thermal Shock Resistance, points 11
23

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
86.9 to 91.2
Copper (Cu), % 0 to 0.010
0.3 to 1.0
Iron (Fe), % 0 to 0.0050
0 to 0.6
Magnesium (Mg), % 96.3 to 98.3
1.2 to 2.0
Manganese (Mn), % 0.1 to 0.7
0.3 to 0.8
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.4
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
7.0 to 8.0
Residuals, % 0 to 0.010
0 to 0.15