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771.0-T6 Aluminum vs. AM100A-T6 Magnesium

771.0-T6 aluminum belongs to the aluminum alloys classification, while AM100A-T6 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 771.0-T6 aluminum and the bottom bar is AM100A-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 6.5
2.3
Fatigue Strength, MPa 99
62
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Tensile Strength: Ultimate (UTS), MPa 320
270
Tensile Strength: Yield (Proof), MPa 270
120

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 180
140
Melting Completion (Liquidus), °C 630
590
Melting Onset (Solidus), °C 620
460
Solidification (Pattern Maker's) Shrinkage, % 1.6
1.3
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 140
73
Thermal Expansion, µm/m-K 24
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
11
Electrical Conductivity: Equal Weight (Specific), % IACS 82
59

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 1130
1000

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
4.9
Resilience: Unit (Modulus of Resilience), kJ/m3 530
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 46
70
Strength to Weight: Axial, points 30
43
Strength to Weight: Bending, points 35
54
Thermal Diffusivity, mm2/s 54
43
Thermal Shock Resistance, points 14
16

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
9.3 to 10.7
Chromium (Cr), % 0.060 to 0.2
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.15
0
Magnesium (Mg), % 0.8 to 1.0
87.9 to 90.6
Manganese (Mn), % 0 to 0.1
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.15
0 to 0.3
Titanium (Ti), % 0.1 to 0.2
0
Zinc (Zn), % 6.5 to 7.5
0 to 0.3
Residuals, % 0
0 to 0.3