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5056 Aluminum vs. AZ63A Magnesium

5056 aluminum belongs to the aluminum alloys classification, while AZ63A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 5056 aluminum and the bottom bar is AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
46
Elongation at Break, % 4.9 to 31
2.2 to 8.0
Fatigue Strength, MPa 140 to 200
76 to 83
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
18
Shear Strength, MPa 170 to 240
110 to 160
Tensile Strength: Ultimate (UTS), MPa 290 to 460
190 to 270
Tensile Strength: Yield (Proof), MPa 150 to 410
81 to 120

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 570
450
Specific Heat Capacity, J/kg-K 910
980
Thermal Conductivity, W/m-K 130
52 to 65
Thermal Expansion, µm/m-K 24
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
12 to 15
Electrical Conductivity: Equal Weight (Specific), % IACS 99
59 to 74

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.8
Embodied Carbon, kg CO2/kg material 9.0
22
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 140
3.7 to 16
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 1220
71 to 160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
66
Strength to Weight: Axial, points 30 to 48
29 to 41
Strength to Weight: Bending, points 36 to 50
40 to 51
Thermal Diffusivity, mm2/s 53
29 to 37
Thermal Shock Resistance, points 13 to 20
11 to 16

Alloy Composition

Aluminum (Al), % 93 to 95.4
5.3 to 6.7
Chromium (Cr), % 0.050 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 4.5 to 5.6
88.6 to 92.1
Manganese (Mn), % 0.050 to 0.2
0.15 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0 to 0.3
Zinc (Zn), % 0 to 0.1
2.5 to 3.5
Residuals, % 0
0 to 0.3