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EN-MC65220 Magnesium vs. SAE-AISI O6 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while SAE-AISI O6 steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN-MC65220 magnesium and the bottom bar is SAE-AISI O6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
180
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
71
Tensile Strength: Ultimate (UTS), MPa 270
670 to 2070

Thermal Properties

Latent Heat of Fusion, J/g 340
260
Melting Completion (Liquidus), °C 610
1430
Melting Onset (Solidus), °C 550
1390
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 110
43
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
2.3
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 27
1.5
Embodied Energy, MJ/kg 210
21

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
24 to 74
Strength to Weight: Bending, points 49
22 to 47
Thermal Diffusivity, mm2/s 61
12
Thermal Shock Resistance, points 17
22 to 69

Alloy Composition


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Carbon (C), % 0
1.3 to 1.6
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0.050 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.010
94.6 to 97.7
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.3 to 1.1
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.55 to 1.5
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0