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EN AC-48100 Aluminum vs. ZK51A Magnesium

EN AC-48100 aluminum belongs to the aluminum alloys classification, while ZK51A 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-48100 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
45
Elongation at Break, % 1.1
4.7
Fatigue Strength, MPa 120 to 130
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 29
18
Tensile Strength: Ultimate (UTS), MPa 240 to 330
240
Tensile Strength: Yield (Proof), MPa 190 to 300
150

Thermal Properties

Latent Heat of Fusion, J/g 640
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 580
640
Melting Onset (Solidus), °C 470
550
Specific Heat Capacity, J/kg-K 880
970
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 20
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
28
Electrical Conductivity: Equal Weight (Specific), % IACS 87
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 2.8
1.8
Embodied Carbon, kg CO2/kg material 7.3
24
Embodied Energy, MJ/kg 130
160
Embodied Water, L/kg 940
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3 to 3.6
10
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 580
260
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 51
64
Strength to Weight: Axial, points 24 to 33
36
Strength to Weight: Bending, points 31 to 38
47
Thermal Diffusivity, mm2/s 55
61
Thermal Shock Resistance, points 11 to 16
15

Alloy Composition

Aluminum (Al), % 72.1 to 79.8
0
Copper (Cu), % 4.0 to 5.0
0 to 0.1
Iron (Fe), % 0 to 1.3
0
Magnesium (Mg), % 0.25 to 0.65
93.1 to 95.9
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.3
0 to 0.010
Silicon (Si), % 16 to 18
0
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.5
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3