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EN-MC65220 Magnesium vs. ACI-ASTM CB6 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CB6 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
18
Fatigue Strength, MPa 110
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 270
880
Tensile Strength: Yield (Proof), MPa 200
660

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 160
870
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 550
1390
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 110
17
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
12
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 27
2.5
Embodied Energy, MJ/kg 210
36

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
150
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
32
Strength to Weight: Bending, points 49
26
Thermal Diffusivity, mm2/s 61
4.6
Thermal Shock Resistance, points 17
31

Alloy Composition


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Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
15.5 to 17.5
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
74.4 to 81
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.0050
3.5 to 5.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 1.0
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