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EN-MC65220 Magnesium vs. SAE-AISI M43 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while SAE-AISI M43 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 M43 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 270
810 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 610
1550
Melting Onset (Solidus), °C 550
1500
Specific Heat Capacity, J/kg-K 980
450
Thermal Conductivity, W/m-K 110
19
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
33
Density, g/cm3 1.9
8.2
Embodied Carbon, kg CO2/kg material 27
8.5
Embodied Energy, MJ/kg 210
120

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
27 to 77
Strength to Weight: Bending, points 49
24 to 47
Thermal Diffusivity, mm2/s 61
5.3
Thermal Shock Resistance, points 17
25 to 71

Alloy Composition


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Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0
3.5 to 4.3
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0.050 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.010
70.8 to 76
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.2 to 0.4
Molybdenum (Mo), % 0
7.5 to 8.5
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.15 to 0.65
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
2.3 to 3.0
Unspecified Rare Earths, % 1.5 to 3.0
0
Vanadium (V), % 0
1.5 to 1.8
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0