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5042 Aluminum vs. ZK60A Magnesium

5042 aluminum belongs to the aluminum alloys classification, while ZK60A magnesium belongs to the magnesium alloys.

For each property being compared, the top bar is 5042 aluminum and the bottom bar is ZK60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
46
Elongation at Break, % 1.1 to 3.4
4.5 to 9.9
Fatigue Strength, MPa 97 to 120
150 to 180
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 200
170 to 190
Tensile Strength: Ultimate (UTS), MPa 340 to 360
320 to 330
Tensile Strength: Yield (Proof), MPa 270 to 310
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 570
550
Specific Heat Capacity, J/kg-K 900
960
Thermal Conductivity, W/m-K 130
120
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
29 to 30
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.8
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
14 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
570 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
63
Strength to Weight: Axial, points 35 to 37
47 to 49
Strength to Weight: Bending, points 40 to 42
55 to 56
Thermal Diffusivity, mm2/s 53
66
Thermal Shock Resistance, points 15 to 16
19 to 20

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 3.0 to 4.0
92.5 to 94.8
Manganese (Mn), % 0.2 to 0.5
0
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
4.8 to 6.2
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3