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AZ91E Magnesium vs. 4007 Aluminum

AZ91E magnesium belongs to the magnesium alloys classification, while 4007 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AZ91E magnesium and the bottom bar is 4007 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
32 to 44
Elastic (Young's, Tensile) Modulus, GPa 46
71
Elongation at Break, % 2.5 to 6.2
5.1 to 23
Fatigue Strength, MPa 81 to 85
46 to 88
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Shear Strength, MPa 89 to 150
80 to 90
Tensile Strength: Ultimate (UTS), MPa 160 to 260
130 to 160
Tensile Strength: Yield (Proof), MPa 96 to 130
50 to 120

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 500
590
Specific Heat Capacity, J/kg-K 990
890
Thermal Conductivity, W/m-K 84
170
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10 to 12
42
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 22
8.1
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4 to 12
7.4 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 190
18 to 110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
49
Strength to Weight: Axial, points 25 to 42
12 to 15
Strength to Weight: Bending, points 37 to 53
20 to 23
Thermal Diffusivity, mm2/s 49
67
Thermal Shock Resistance, points 9.0 to 15
5.5 to 6.7

Alloy Composition

Aluminum (Al), % 8.1 to 9.3
94.1 to 97.6
Chromium (Cr), % 0
0.050 to 0.25
Cobalt (Co), % 0
0 to 0.050
Copper (Cu), % 0 to 0.015
0 to 0.2
Iron (Fe), % 0 to 0.0050
0.4 to 1.0
Magnesium (Mg), % 88.8 to 91.3
0 to 0.2
Manganese (Mn), % 0.17 to 0.35
0.8 to 1.5
Nickel (Ni), % 0 to 0.0010
0.15 to 0.7
Silicon (Si), % 0 to 0.2
1.0 to 1.7
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0.4 to 1.0
0 to 0.1
Residuals, % 0
0 to 0.15