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6070-T6 Aluminum vs. AZ91E-T6 Magnesium

6070-T6 aluminum belongs to the aluminum alloys classification, while AZ91E-T6 magnesium belongs to the magnesium alloys. There are 30 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 6070-T6 aluminum and the bottom bar is AZ91E-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 8.6
3.9
Fatigue Strength, MPa 95
84
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 240
150
Tensile Strength: Ultimate (UTS), MPa 380
260
Tensile Strength: Yield (Proof), MPa 350
130

Thermal Properties

Latent Heat of Fusion, J/g 410
350
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 570
500
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 160
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
11
Electrical Conductivity: Equal Weight (Specific), % IACS 140
58

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 880
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 38
42
Strength to Weight: Bending, points 43
53
Thermal Diffusivity, mm2/s 65
49
Thermal Shock Resistance, points 17
15

Alloy Composition

Aluminum (Al), % 94.6 to 98
8.1 to 9.3
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 0.5 to 1.2
88.8 to 91.3
Manganese (Mn), % 0.4 to 1.0
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 1.0 to 1.7
0 to 0.2
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0.4 to 1.0
Residuals, % 0
0 to 0.3