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EN-MC32110 Magnesium vs. ACI-ASTM CD4MCuN Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CD4MCuN steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 CD4MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 49
200
Elongation at Break, % 2.2
18
Fatigue Strength, MPa 80
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 19
79
Tensile Strength: Ultimate (UTS), MPa 220
770
Tensile Strength: Yield (Proof), MPa 140
550

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 99
1100
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 500
1380
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 120
17
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
18
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
3.5
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 920
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
130
Resilience: Unit (Modulus of Resilience), kJ/m3 210
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 29
28
Strength to Weight: Bending, points 38
24
Thermal Diffusivity, mm2/s 58
4.5
Thermal Shock Resistance, points 12
21

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 2.4 to 3.0
2.7 to 3.3
Iron (Fe), % 0 to 0.050
59.5 to 66.3
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0 to 1.0
Molybdenum (Mo), % 0
1.7 to 2.3
Nickel (Ni), % 0 to 0.010
4.7 to 6.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0