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ZK40A Magnesium vs. 6182 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 6182 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 6182 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.2
6.8 to 13
Fatigue Strength, MPa 190
63 to 99
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
140 to 190
Tensile Strength: Ultimate (UTS), MPa 280
230 to 320
Tensile Strength: Yield (Proof), MPa 260
130 to 270

Thermal Properties

Latent Heat of Fusion, J/g 340
410
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
600
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 110
160
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
40
Electrical Conductivity: Equal Weight (Specific), % IACS 130
130

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
8.4
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 740
110 to 520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 43
23 to 32
Strength to Weight: Bending, points 53
30 to 38
Thermal Diffusivity, mm2/s 62
65
Thermal Shock Resistance, points 17
10 to 14

Alloy Composition


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Aluminum (Al), % 0
95 to 97.9
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 94.2 to 96.1
0.7 to 1.2
Manganese (Mn), % 0
0.5 to 1.0
Silicon (Si), % 0
0.9 to 1.3
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 3.5 to 4.5
0 to 0.2
Zirconium (Zr), % 0.45 to 1.0
0.050 to 0.2
Residuals, % 0 to 0.3
0 to 0.15