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5056 Aluminum vs. ZE41A Magnesium

5056 aluminum belongs to the aluminum alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 5056 aluminum and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
45
Elongation at Break, % 4.9 to 31
3.3
Fatigue Strength, MPa 140 to 200
98
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 170 to 240
150
Tensile Strength: Ultimate (UTS), MPa 290 to 460
210
Tensile Strength: Yield (Proof), MPa 150 to 410
140

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 190
150
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 570
540
Specific Heat Capacity, J/kg-K 910
970
Thermal Conductivity, W/m-K 130
110
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
27
Electrical Conductivity: Equal Weight (Specific), % IACS 99
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 9.0
24
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1180
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 140
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 1220
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
63
Strength to Weight: Axial, points 30 to 48
31
Strength to Weight: Bending, points 36 to 50
41
Thermal Diffusivity, mm2/s 53
59
Thermal Shock Resistance, points 13 to 20
12

Alloy Composition

Aluminum (Al), % 93 to 95.4
0
Chromium (Cr), % 0.050 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 4.5 to 5.6
91.7 to 95.4
Manganese (Mn), % 0.050 to 0.2
0 to 0.15
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0 to 0.1
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3