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ZK40A Magnesium vs. 6023 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 6023 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 6023 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 4.2
11
Fatigue Strength, MPa 190
120 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
210 to 220
Tensile Strength: Ultimate (UTS), MPa 280
360
Tensile Strength: Yield (Proof), MPa 260
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
580
Specific Heat Capacity, J/kg-K 970
890
Thermal Conductivity, W/m-K 110
170
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
45
Electrical Conductivity: Equal Weight (Specific), % IACS 130
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 1.8
2.8
Embodied Carbon, kg CO2/kg material 24
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
38 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 740
670 to 690
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
49
Strength to Weight: Axial, points 43
35 to 36
Strength to Weight: Bending, points 53
40
Thermal Diffusivity, mm2/s 62
67
Thermal Shock Resistance, points 17
16

Alloy Composition

Aluminum (Al), % 0
94 to 97.7
Bismuth (Bi), % 0
0.3 to 0.8
Copper (Cu), % 0
0.2 to 0.5
Iron (Fe), % 0
0 to 0.5
Magnesium (Mg), % 94.2 to 96.1
0.4 to 0.9
Manganese (Mn), % 0
0.2 to 0.6
Silicon (Si), % 0
0.6 to 1.4
Tin (Sn), % 0
0.6 to 1.2
Zinc (Zn), % 3.5 to 4.5
0
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0
0 to 0.15