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EN 1.7710 Steel vs. EN-MC21220 Magnesium

EN 1.7710 steel belongs to the iron alloys classification, while EN-MC21220 magnesium belongs to the magnesium 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 1.7710 steel and the bottom bar is EN-MC21220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 320
58
Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 6.8 to 11
11
Fatigue Strength, MPa 500 to 620
89
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Tensile Strength: Ultimate (UTS), MPa 930 to 1070
210
Tensile Strength: Yield (Proof), MPa 800 to 1060
120

Thermal Properties

Latent Heat of Fusion, J/g 260
350
Maximum Temperature: Mechanical, °C 440
120
Melting Completion (Liquidus), °C 1470
600
Melting Onset (Solidus), °C 1430
540
Specific Heat Capacity, J/kg-K 470
1000
Thermal Conductivity, W/m-K 41
65
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
16
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
87

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.2
23
Embodied Energy, MJ/kg 30
160
Embodied Water, L/kg 57
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73 to 100
20
Resilience: Unit (Modulus of Resilience), kJ/m3 1680 to 2970
160
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
71
Strength to Weight: Axial, points 33 to 38
34
Strength to Weight: Bending, points 27 to 30
46
Thermal Diffusivity, mm2/s 11
39
Thermal Shock Resistance, points 27 to 31
12

Alloy Composition

Aluminum (Al), % 0
4.4 to 5.5
Carbon (C), % 0.12 to 0.18
0
Chromium (Cr), % 1.3 to 1.8
0
Copper (Cu), % 0
0 to 0.010
Iron (Fe), % 95.1 to 97
0 to 0.0050
Magnesium (Mg), % 0
93.5 to 95.5
Manganese (Mn), % 0.6 to 1.0
0.1 to 0.6
Molybdenum (Mo), % 0.8 to 1.0
0
Nickel (Ni), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.6
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.15 to 0.25
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.010