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7175 Aluminum vs. ZE41A Magnesium

7175 aluminum belongs to the aluminum alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 7175 aluminum and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
45
Elongation at Break, % 3.8 to 5.9
3.3
Fatigue Strength, MPa 150 to 180
98
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 290 to 330
150
Tensile Strength: Ultimate (UTS), MPa 520 to 570
210
Tensile Strength: Yield (Proof), MPa 430 to 490
140

Thermal Properties

Latent Heat of Fusion, J/g 380
330
Maximum Temperature: Mechanical, °C 180
150
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 480
540
Specific Heat Capacity, J/kg-K 870
970
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
27
Electrical Conductivity: Equal Weight (Specific), % IACS 99
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
18
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.2
24
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1130
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 29
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 1310 to 1730
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
63
Strength to Weight: Axial, points 48 to 52
31
Strength to Weight: Bending, points 48 to 51
41
Thermal Diffusivity, mm2/s 53
59
Thermal Shock Resistance, points 23 to 25
12

Alloy Composition

Aluminum (Al), % 88 to 91.4
0
Chromium (Cr), % 0.18 to 0.28
0
Copper (Cu), % 1.2 to 2.0
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Magnesium (Mg), % 2.1 to 2.9
91.7 to 95.4
Manganese (Mn), % 0 to 0.1
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.1
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 5.1 to 6.1
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3