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2017 Aluminum vs. ZK61A Magnesium

2017 aluminum belongs to the aluminum alloys classification, while ZK61A magnesium belongs to the magnesium 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 2017 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 12 to 18
5.8 to 7.1
Fatigue Strength, MPa 90 to 130
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 130 to 260
170 to 180
Tensile Strength: Ultimate (UTS), MPa 190 to 430
290 to 310
Tensile Strength: Yield (Proof), MPa 76 to 260
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 510
530
Specific Heat Capacity, J/kg-K 880
960
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
29
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 66
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
62
Strength to Weight: Axial, points 17 to 40
42 to 45
Strength to Weight: Bending, points 24 to 42
50 to 53
Thermal Diffusivity, mm2/s 56
65
Thermal Shock Resistance, points 7.9 to 18
17 to 18

Alloy Composition

Aluminum (Al), % 91.6 to 95.5
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0 to 0.1
Iron (Fe), % 0 to 0.7
0
Magnesium (Mg), % 0.4 to 0.8
92.1 to 93.9
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 0.15
0
Zinc (Zn), % 0 to 0.25
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3