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EN-MC35110 Magnesium vs. EN 1.7779 Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while EN 1.7779 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 EN 1.7779 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
240
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 3.1
16
Fatigue Strength, MPa 110
430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
500
Tensile Strength: Ultimate (UTS), MPa 230
810
Tensile Strength: Yield (Proof), MPa 150
660

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Maximum Temperature: Mechanical, °C 140
470
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 18
4.0
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 24
2.8
Embodied Energy, MJ/kg 170
41
Embodied Water, L/kg 940
64

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
120
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
24
Strength to Weight: Axial, points 34
29
Strength to Weight: Bending, points 44
25
Thermal Diffusivity, mm2/s 61
11
Thermal Shock Resistance, points 14
23

Alloy Composition


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Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0
0.17 to 0.23
Chromium (Cr), % 0
3.0 to 3.3
Copper (Cu), % 0 to 0.030
0 to 0.3
Iron (Fe), % 0 to 0.010
93.8 to 95.4
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.5
Molybdenum (Mo), % 0
0.5 to 0.6
Nickel (Ni), % 0 to 0.0050
0 to 0.3
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.010
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Unspecified Rare Earths, % 0.75 to 1.8
0
Vanadium (V), % 0
0.45 to 0.55
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0