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242.0-T7 Aluminum vs. AM100A-T7 Magnesium

242.0-T7 aluminum belongs to the aluminum alloys classification, while AM100A-T7 magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is 242.0-T7 aluminum and the bottom bar is AM100A-T7 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
46
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Tensile Strength: Ultimate (UTS), MPa 240
260
Tensile Strength: Yield (Proof), MPa 200
130

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 210
140
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 530
460
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 150
73
Thermal Expansion, µm/m-K 22
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
11
Electrical Conductivity: Equal Weight (Specific), % IACS 110
59

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 3.1
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
1000

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4
1.3 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 270
190
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 45
70
Strength to Weight: Axial, points 22
42
Strength to Weight: Bending, points 28
53
Thermal Diffusivity, mm2/s 54
43
Thermal Shock Resistance, points 10
16

Alloy Composition

Aluminum (Al), % 88.4 to 93.6
9.3 to 10.7
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 3.5 to 4.5
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 1.2 to 1.8
87.9 to 90.6
Manganese (Mn), % 0 to 0.35
0.1 to 0.35
Nickel (Ni), % 1.7 to 2.3
0 to 0.010
Silicon (Si), % 0 to 0.7
0 to 0.3
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0 to 0.3
Residuals, % 0
0 to 0.3