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EN-MC35110 Magnesium vs. ACI-ASTM CN3MN Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CN3MN steel belongs to the iron 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 EN-MC35110 magnesium and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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