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EN 1.7725 Steel vs. EN-MC65210 Magnesium

EN 1.7725 steel belongs to the iron alloys classification, while EN-MC65210 magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 1.7725 steel and the bottom bar is EN-MC65210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250 to 300
80
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 14
2.8
Fatigue Strength, MPa 390 to 550
110
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Tensile Strength: Ultimate (UTS), MPa 830 to 1000
270
Tensile Strength: Yield (Proof), MPa 610 to 860
200

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 440
170
Melting Completion (Liquidus), °C 1460
610
Melting Onset (Solidus), °C 1420
540
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 39
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
110

Otherwise Unclassified Properties

Density, g/cm3 7.8
2.0
Embodied Carbon, kg CO2/kg material 1.8
27
Embodied Energy, MJ/kg 24
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 980 to 1940
450
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
59
Strength to Weight: Axial, points 29 to 35
38
Strength to Weight: Bending, points 25 to 28
47
Thermal Diffusivity, mm2/s 11
58
Thermal Shock Resistance, points 24 to 29
17

Alloy Composition

Carbon (C), % 0.27 to 0.34
0
Chromium (Cr), % 1.3 to 1.7
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 95.7 to 97.5
0 to 0.010
Magnesium (Mg), % 0
92.6 to 95.6
Manganese (Mn), % 0.6 to 1.0
0 to 0.15
Molybdenum (Mo), % 0.3 to 0.5
0
Nickel (Ni), % 0
0 to 0.0050
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0 to 0.010
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
2.0 to 3.0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010