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EN-MC21210 Magnesium vs. EN 1.7729 Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while EN 1.7729 steel belongs to the iron alloys. There are 31 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-MC21210 magnesium and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
270
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
17
Fatigue Strength, MPa 70
500
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 110
560
Tensile Strength: Ultimate (UTS), MPa 190
910
Tensile Strength: Yield (Proof), MPa 90
750

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 100
430
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 570
1430
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
40
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.8
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
3.3
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 980
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
150
Resilience: Unit (Modulus of Resilience), kJ/m3 92
1500
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
32
Strength to Weight: Bending, points 44
27
Thermal Diffusivity, mm2/s 76
11
Thermal Shock Resistance, points 11
27

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0.17 to 0.23
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 0 to 0.010
0 to 0.2
Iron (Fe), % 0 to 0.0050
94.8 to 97
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0.35 to 0.75
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.0020
0 to 0.2
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 0
0.070 to 0.15
Vanadium (V), % 0
0.6 to 0.8
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0