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ZK40A Magnesium vs. 4115 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 4115 aluminum belongs to the aluminum 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 ZK40A magnesium and the bottom bar is 4115 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
70
Elongation at Break, % 4.2
1.1 to 11
Fatigue Strength, MPa 190
39 to 76
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
71 to 130
Tensile Strength: Ultimate (UTS), MPa 280
120 to 220
Tensile Strength: Yield (Proof), MPa 260
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 340
420
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
590
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
41
Electrical Conductivity: Equal Weight (Specific), % IACS 130
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
8.1
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
2.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 740
11 to 270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 43
12 to 23
Strength to Weight: Bending, points 53
20 to 30
Thermal Diffusivity, mm2/s 62
66
Thermal Shock Resistance, points 17
5.2 to 9.9

Alloy Composition


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Aluminum (Al), % 0
94.6 to 97.4
Copper (Cu), % 0
0.1 to 0.5
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 94.2 to 96.1
0.1 to 0.5
Manganese (Mn), % 0
0.6 to 1.2
Silicon (Si), % 0
1.8 to 2.2
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