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EN AC-21200 Aluminum vs. ZK61A Magnesium

EN AC-21200 aluminum belongs to the aluminum alloys classification, while ZK61A magnesium belongs to the magnesium 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 EN AC-21200 aluminum and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
46
Elongation at Break, % 3.9 to 6.2
5.8 to 7.1
Fatigue Strength, MPa 110 to 130
120 to 140
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Tensile Strength: Ultimate (UTS), MPa 410 to 440
290 to 310
Tensile Strength: Yield (Proof), MPa 270 to 360
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 390
330
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 660
640
Melting Onset (Solidus), °C 550
530
Specific Heat Capacity, J/kg-K 880
960
Thermal Conductivity, W/m-K 130
120
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
29
Electrical Conductivity: Equal Weight (Specific), % IACS 100
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 3.0
1.9
Embodied Carbon, kg CO2/kg material 8.0
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 22
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 930
370 to 420
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
62
Strength to Weight: Axial, points 38 to 40
42 to 45
Strength to Weight: Bending, points 41 to 43
50 to 53
Thermal Diffusivity, mm2/s 49
65
Thermal Shock Resistance, points 18 to 19
17 to 18

Alloy Composition

Aluminum (Al), % 93.3 to 95.7
0
Copper (Cu), % 4.0 to 5.0
0 to 0.1
Iron (Fe), % 0 to 0.2
0
Lead (Pb), % 0 to 0.030
0
Magnesium (Mg), % 0.15 to 0.5
92.1 to 93.9
Manganese (Mn), % 0.2 to 0.5
0
Nickel (Ni), % 0 to 0.050
0 to 0.010
Silicon (Si), % 0 to 0.1
0
Tin (Sn), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3