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EN AC-42100 Aluminum vs. EQ21A Magnesium

EN AC-42100 aluminum belongs to the aluminum alloys classification, while EQ21A magnesium belongs to the magnesium alloys. There are 29 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 EN AC-42100 aluminum and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
80
Elastic (Young's, Tensile) Modulus, GPa 70
44
Elongation at Break, % 3.4 to 9.0
2.4
Fatigue Strength, MPa 76 to 82
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Tensile Strength: Ultimate (UTS), MPa 280 to 290
250
Tensile Strength: Yield (Proof), MPa 210 to 230
190

Thermal Properties

Latent Heat of Fusion, J/g 500
340
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 610
640
Melting Onset (Solidus), °C 600
560
Specific Heat Capacity, J/kg-K 910
980
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 22
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
25
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.6
1.9
Embodied Carbon, kg CO2/kg material 8.0
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
410
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
63
Strength to Weight: Axial, points 30 to 31
37
Strength to Weight: Bending, points 37 to 38
47
Thermal Diffusivity, mm2/s 66
62
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
0
Copper (Cu), % 0 to 0.050
0.050 to 0.1
Iron (Fe), % 0 to 0.19
0
Magnesium (Mg), % 0.25 to 0.45
93.9 to 96.8
Manganese (Mn), % 0 to 0.1
0
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 6.5 to 7.5
0
Silver (Ag), % 0
1.3 to 1.7
Titanium (Ti), % 0 to 0.25
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.070
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3