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7075-T6 Aluminum vs. AM100A-T6 Magnesium

7075-T6 aluminum belongs to the aluminum alloys classification, while AM100A-T6 magnesium belongs to the magnesium alloys. There are 30 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 7075-T6 aluminum and the bottom bar is AM100A-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 7.9
2.3
Fatigue Strength, MPa 160
62
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 330
150
Tensile Strength: Ultimate (UTS), MPa 560
270
Tensile Strength: Yield (Proof), MPa 480
120

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 200
140
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 480
460
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 130
73
Thermal Expansion, µm/m-K 23
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
11
Electrical Conductivity: Equal Weight (Specific), % IACS 98
59

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1120
1000

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 42
4.9
Resilience: Unit (Modulus of Resilience), kJ/m3 1630
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
70
Strength to Weight: Axial, points 51
43
Strength to Weight: Bending, points 50
54
Thermal Diffusivity, mm2/s 50
43
Thermal Shock Resistance, points 24
16

Alloy Composition

Aluminum (Al), % 86.9 to 91.4
9.3 to 10.7
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.1
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 2.1 to 2.9
87.9 to 90.6
Manganese (Mn), % 0 to 0.3
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.4
0 to 0.3
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.1 to 6.1
0 to 0.3
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.3