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ZK40A Magnesium vs. 6008 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 6008 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 6008 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 4.2
9.1 to 17
Fatigue Strength, MPa 190
55 to 88
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
120 to 170
Tensile Strength: Ultimate (UTS), MPa 280
200 to 290
Tensile Strength: Yield (Proof), MPa 260
100 to 220

Thermal Properties

Latent Heat of Fusion, J/g 340
410
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
620
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 110
190
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
49
Electrical Conductivity: Equal Weight (Specific), % IACS 130
160

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
8.5
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 950
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
24 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 740
76 to 360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 43
21 to 29
Strength to Weight: Bending, points 53
28 to 35
Thermal Diffusivity, mm2/s 62
77
Thermal Shock Resistance, points 17
9.0 to 13

Alloy Composition


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Aluminum (Al), % 0
96.5 to 99.1
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 0
0 to 0.35
Magnesium (Mg), % 94.2 to 96.1
0.4 to 0.7
Manganese (Mn), % 0
0 to 0.3
Silicon (Si), % 0
0.5 to 0.9
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0
0.050 to 0.2
Zinc (Zn), % 3.5 to 4.5
0 to 0.2
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15