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EN-MC32110 Magnesium vs. ACI-ASTM CT15C Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CT15C 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 CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
140
Elastic (Young's, Tensile) Modulus, GPa 49
200
Elongation at Break, % 2.2
23
Fatigue Strength, MPa 80
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
76
Tensile Strength: Ultimate (UTS), MPa 220
500
Tensile Strength: Yield (Proof), MPa 140
190

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 99
1080
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 500
1360
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
36
Density, g/cm3 2.1
8.0
Embodied Carbon, kg CO2/kg material 22
6.1
Embodied Energy, MJ/kg 150
88
Embodied Water, L/kg 920
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
90
Resilience: Unit (Modulus of Resilience), kJ/m3 210
93
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
17
Strength to Weight: Bending, points 38
17
Thermal Diffusivity, mm2/s 58
3.2
Thermal Shock Resistance, points 12
12

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
40.3 to 49.2
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.15 to 1.5
Nickel (Ni), % 0 to 0.010
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0.15 to 1.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0