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2117 Aluminum vs. ZK51A Magnesium

2117 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 2117 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 26
4.7
Fatigue Strength, MPa 95
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 200
160
Tensile Strength: Ultimate (UTS), MPa 300
240
Tensile Strength: Yield (Proof), MPa 170
150

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 220
120
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 880
970
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
28
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.8
Embodied Carbon, kg CO2/kg material 8.2
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
10
Resilience: Unit (Modulus of Resilience), kJ/m3 190
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
64
Strength to Weight: Axial, points 28
36
Strength to Weight: Bending, points 33
47
Thermal Diffusivity, mm2/s 59
61
Thermal Shock Resistance, points 12
15

Alloy Composition

Aluminum (Al), % 91 to 97.6
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 2.2 to 4.5
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0.2 to 1.0
93.1 to 95.9
Manganese (Mn), % 0.4 to 1.0
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0.2 to 0.8
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
3.6 to 5.5
Zirconium (Zr), % 0 to 0.25
0.5 to 1.0
Residuals, % 0
0 to 0.3