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ACI-ASTM CN3MN Steel vs. EN-MC35110 Magnesium

ACI-ASTM CN3MN steel belongs to the iron alloys classification, while EN-MC35110 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 ACI-ASTM CN3MN steel and the bottom bar is EN-MC35110 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
63
Elastic (Young's, Tensile) Modulus, GPa 210
45
Elongation at Break, % 39
3.1
Fatigue Strength, MPa 250
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
18
Tensile Strength: Ultimate (UTS), MPa 620
230
Tensile Strength: Yield (Proof), MPa 300
150

Thermal Properties

Latent Heat of Fusion, J/g 310
330
Maximum Temperature: Mechanical, °C 1100
140
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1410
520
Specific Heat Capacity, J/kg-K 460
970
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 16
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
130

Otherwise Unclassified Properties

Base Metal Price, % relative 33
18
Density, g/cm3 8.1
1.9
Embodied Carbon, kg CO2/kg material 6.2
24
Embodied Energy, MJ/kg 84
170
Embodied Water, L/kg 200
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 210
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 21
34
Strength to Weight: Bending, points 20
44
Thermal Diffusivity, mm2/s 3.4
61
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20 to 22
0
Copper (Cu), % 0 to 0.75
0 to 0.030
Iron (Fe), % 41.4 to 50.3
0 to 0.010
Magnesium (Mg), % 0
92 to 95.4
Manganese (Mn), % 0 to 2.0
0 to 0.15
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 23.5 to 25.5
0 to 0.0050
Nitrogen (N), % 0.18 to 0.26
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.010
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010