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EQ21A Magnesium vs. 204.0 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 204.0 aluminum belongs to the aluminum 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 EQ21A magnesium and the bottom bar is 204.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
90 to 120
Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 2.4
5.7 to 7.8
Fatigue Strength, MPa 110
63 to 77
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Tensile Strength: Ultimate (UTS), MPa 250
230 to 340
Tensile Strength: Yield (Proof), MPa 190
180 to 220

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 560
580
Solidification (Pattern Maker's) Shrinkage, % 1.3
1.3
Specific Heat Capacity, J/kg-K 980
880
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 27
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
29 to 34
Electrical Conductivity: Equal Weight (Specific), % IACS 120
87 to 100

Otherwise Unclassified Properties

Base Metal Price, % relative 80
11
Density, g/cm3 1.9
3.0
Embodied Carbon, kg CO2/kg material 27
8.0
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 410
220 to 350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
46
Strength to Weight: Axial, points 37
21 to 31
Strength to Weight: Bending, points 47
28 to 36
Thermal Diffusivity, mm2/s 62
46
Thermal Shock Resistance, points 15
12 to 18

Alloy Composition


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Aluminum (Al), % 0
93.4 to 95.5
Copper (Cu), % 0.050 to 0.1
4.2 to 5.0
Iron (Fe), % 0
0 to 0.35
Magnesium (Mg), % 93.9 to 96.8
0.15 to 0.35
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.010
0 to 0.050
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 1.3 to 1.7
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15