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EN-MC65220 Magnesium vs. EN 1.7725 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while EN 1.7725 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 EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
14
Fatigue Strength, MPa 110
390 to 550
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 270
830 to 1000
Tensile Strength: Yield (Proof), MPa 200
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 160
440
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 80
2.9
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 27
1.8
Embodied Energy, MJ/kg 210
24

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 450
980 to 1940
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
29 to 35
Strength to Weight: Bending, points 49
25 to 28
Thermal Diffusivity, mm2/s 61
11
Thermal Shock Resistance, points 17
24 to 29

Alloy Composition


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Carbon (C), % 0
0.27 to 0.34
Chromium (Cr), % 0
1.3 to 1.7
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
95.7 to 97.5
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.6 to 1.0
Molybdenum (Mo), % 0
0.3 to 0.5
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.010
0 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 1.5 to 3.0
0
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0