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EN-MC65220 Magnesium vs. ACI-ASTM CT15C Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CT15C 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-MC65220 magnesium and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
140
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
23
Fatigue Strength, MPa 110
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Tensile Strength: Ultimate (UTS), MPa 270
500
Tensile Strength: Yield (Proof), MPa 200
190

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Mechanical, °C 160
1080
Melting Completion (Liquidus), °C 610
1410
Melting Onset (Solidus), °C 550
1360
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
12
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 80
36
Density, g/cm3 1.9
8.0
Embodied Carbon, kg CO2/kg material 27
6.1
Embodied Energy, MJ/kg 210
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
90
Resilience: Unit (Modulus of Resilience), kJ/m3 450
93
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
17
Strength to Weight: Bending, points 49
17
Thermal Diffusivity, mm2/s 61
3.2
Thermal Shock Resistance, points 17
12

Alloy Composition


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Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
40.3 to 49.2
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.15 to 1.5
Nickel (Ni), % 0 to 0.0050
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.15 to 1.5
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0