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712.0-F Aluminum vs. AZ91E-F Magnesium

712.0-F aluminum belongs to the aluminum alloys classification, while AZ91E-F magnesium belongs to the magnesium alloys. There are 32 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 712.0-F aluminum and the bottom bar is AZ91E-F magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
75
Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 4.7
2.5
Fatigue Strength, MPa 180
81
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
18
Shear Strength, MPa 180
89
Tensile Strength: Ultimate (UTS), MPa 250
160
Tensile Strength: Yield (Proof), MPa 180
96

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 190
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 610
500
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.3
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 160
84
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
12
Electrical Conductivity: Equal Weight (Specific), % IACS 120
60

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 3.0
1.7
Embodied Carbon, kg CO2/kg material 8.0
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 240
100
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
69
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 30
37
Thermal Diffusivity, mm2/s 62
49
Thermal Shock Resistance, points 11
9.0

Alloy Composition

Aluminum (Al), % 90.7 to 94
8.1 to 9.3
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0 to 0.25
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.5 to 0.65
88.8 to 91.3
Manganese (Mn), % 0 to 0.1
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0 to 0.3
0 to 0.2
Titanium (Ti), % 0.15 to 0.25
0
Zinc (Zn), % 5.0 to 6.5
0.4 to 1.0
Residuals, % 0
0 to 0.3