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ZK40A Magnesium vs. 705.0 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 705.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 705.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
69
Elongation at Break, % 4.2
8.4 to 10
Fatigue Strength, MPa 190
63 to 98
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Tensile Strength: Ultimate (UTS), MPa 280
240 to 260
Tensile Strength: Yield (Proof), MPa 260
130

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
180
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
610
Specific Heat Capacity, J/kg-K 970
890
Thermal Conductivity, W/m-K 110
140
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
34
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.8
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
18 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 740
120 to 130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
49
Strength to Weight: Axial, points 43
24 to 26
Strength to Weight: Bending, points 53
31 to 32
Thermal Diffusivity, mm2/s 62
55
Thermal Shock Resistance, points 17
11

Alloy Composition


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Aluminum (Al), % 0
92.3 to 98.6
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 94.2 to 96.1
1.4 to 1.8
Manganese (Mn), % 0
0 to 0.6
Silicon (Si), % 0
0 to 0.2
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 3.5 to 4.5
0 to 3.3
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15