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EN-MC32110 Magnesium vs. ACI-ASTM CK3MCuN Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CK3MCuN 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-MC32110 magnesium and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
180
Elastic (Young's, Tensile) Modulus, GPa 49
200
Elongation at Break, % 2.2
39
Fatigue Strength, MPa 80
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
80
Tensile Strength: Ultimate (UTS), MPa 220
620
Tensile Strength: Yield (Proof), MPa 140
290

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 99
1090
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1350
Specific Heat Capacity, J/kg-K 950
460
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
29
Density, g/cm3 2.1
8.0
Embodied Carbon, kg CO2/kg material 22
5.6
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 920
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
200
Resilience: Unit (Modulus of Resilience), kJ/m3 210
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 38
20
Thermal Diffusivity, mm2/s 58
3.2
Thermal Shock Resistance, points 12
14

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 2.4 to 3.0
0.5 to 1.0
Iron (Fe), % 0 to 0.050
49.5 to 56.3
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.010
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0