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AZ91A Magnesium vs. 5010 Aluminum

AZ91A magnesium belongs to the magnesium alloys classification, while 5010 aluminum belongs to the aluminum alloys. There are 31 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 AZ91A magnesium and the bottom bar is 5010 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 46
69
Elongation at Break, % 5.0
1.1 to 23
Fatigue Strength, MPa 99
35 to 83
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 140
64 to 120
Tensile Strength: Ultimate (UTS), MPa 240
100 to 210
Tensile Strength: Yield (Proof), MPa 160
38 to 190

Thermal Properties

Latent Heat of Fusion, J/g 360
400
Maximum Temperature: Mechanical, °C 130
180
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 470
630
Specific Heat Capacity, J/kg-K 990
900
Thermal Conductivity, W/m-K 73
200
Thermal Expansion, µm/m-K 26
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
45
Electrical Conductivity: Equal Weight (Specific), % IACS 52
150

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.7
Embodied Carbon, kg CO2/kg material 22
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
2.3 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 280
10 to 270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
50
Strength to Weight: Axial, points 38
10 to 22
Strength to Weight: Bending, points 49
18 to 29
Thermal Diffusivity, mm2/s 42
82
Thermal Shock Resistance, points 14
4.5 to 9.4

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
97.1 to 99.7
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 88.2 to 91.2
0.2 to 0.6
Manganese (Mn), % 0.13 to 0.5
0.1 to 0.3
Nickel (Ni), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0 to 0.4
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0.35 to 1.0
0 to 0.3
Residuals, % 0
0 to 0.15