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7204-T4 Aluminum vs. AM100A-T4 Magnesium

7204-T4 aluminum belongs to the aluminum alloys classification, while AM100A-T4 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7204-T4 aluminum and the bottom bar is AM100A-T4 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 13
6.8
Fatigue Strength, MPa 110
55
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 220
150
Tensile Strength: Ultimate (UTS), MPa 360
260
Tensile Strength: Yield (Proof), MPa 220
78

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 210
140
Melting Completion (Liquidus), °C 640
590
Melting Onset (Solidus), °C 520
460
Specific Heat Capacity, J/kg-K 880
990
Thermal Conductivity, W/m-K 150
73
Thermal Expansion, µm/m-K 24
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
59

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.4
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
1000

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
14
Resilience: Unit (Modulus of Resilience), kJ/m3 340
66
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
70
Strength to Weight: Axial, points 34
43
Strength to Weight: Bending, points 39
53
Thermal Diffusivity, mm2/s 58
43
Thermal Shock Resistance, points 16
16

Alloy Composition

Aluminum (Al), % 90.5 to 94.8
9.3 to 10.7
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.2
0 to 0.1
Iron (Fe), % 0 to 0.35
0
Magnesium (Mg), % 1.0 to 2.0
87.9 to 90.6
Manganese (Mn), % 0.2 to 0.7
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0 to 0.3
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0 to 0.1
0
Zinc (Zn), % 4.0 to 5.0
0 to 0.3
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0
0 to 0.3