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AM50A Magnesium vs. 7475 Aluminum

AM50A magnesium belongs to the magnesium alloys classification, while 7475 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 AM50A magnesium and the bottom bar is 7475 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 11
10 to 12
Fatigue Strength, MPa 70
190 to 210
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
26
Shear Strength, MPa 120
320 to 350
Tensile Strength: Ultimate (UTS), MPa 210
530 to 590
Tensile Strength: Yield (Proof), MPa 120
440 to 520

Thermal Properties

Latent Heat of Fusion, J/g 350
380
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 620
640
Melting Onset (Solidus), °C 570
480
Specific Heat Capacity, J/kg-K 1000
870
Thermal Conductivity, W/m-K 65
140 to 160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
33 to 42
Electrical Conductivity: Equal Weight (Specific), % IACS 88
98 to 120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.7
3.0
Embodied Carbon, kg CO2/kg material 23
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
53 to 68
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1390 to 1920
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
46
Strength to Weight: Axial, points 35
49 to 55
Strength to Weight: Bending, points 47
48 to 52
Thermal Diffusivity, mm2/s 39
53 to 63
Thermal Shock Resistance, points 13
23 to 26

Alloy Composition


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Aluminum (Al), % 4.4 to 5.4
88.6 to 91.6
Chromium (Cr), % 0
0.18 to 0.25
Copper (Cu), % 0 to 0.010
1.2 to 1.9
Iron (Fe), % 0 to 0.0040
0 to 0.12
Magnesium (Mg), % 93.7 to 95.3
1.9 to 2.6
Manganese (Mn), % 0.26 to 0.6
0 to 0.060
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.1
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 0 to 0.22
5.1 to 6.2
Residuals, % 0
0 to 0.15