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EN-MC65210 Magnesium vs. ACI-ASTM CN3M Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CN3M steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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-MC65210 magnesium and the bottom bar is ACI-ASTM CN3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
140
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.8
34
Fatigue Strength, MPa 110
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
80
Tensile Strength: Ultimate (UTS), MPa 270
500
Tensile Strength: Yield (Proof), MPa 200
190

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 610
1450
Melting Onset (Solidus), °C 540
1400
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
13
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.9

Otherwise Unclassified Properties

Density, g/cm3 2.0
8.1
Embodied Carbon, kg CO2/kg material 27
5.9
Embodied Energy, MJ/kg 220
80

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
130
Resilience: Unit (Modulus of Resilience), kJ/m3 450
89
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
24
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 47
17
Thermal Diffusivity, mm2/s 58
3.4
Thermal Shock Resistance, points 17
11

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
42.4 to 52.5
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0 to 2.0
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 0 to 0.0050
23 to 27
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 1.0
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.0 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