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EN-MC21320 Magnesium vs. EN 1.8505 Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.8505 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-MC21320 magnesium and the bottom bar is EN 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
320
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
13
Fatigue Strength, MPa 95
540
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
630
Tensile Strength: Ultimate (UTS), MPa 230
1050
Tensile Strength: Yield (Proof), MPa 140
860

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
440
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.8
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
1.6
Embodied Energy, MJ/kg 160
22
Embodied Water, L/kg 980
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
1950
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
37
Strength to Weight: Bending, points 50
30
Thermal Diffusivity, mm2/s 40
11
Thermal Shock Resistance, points 13
31

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0.8 to 1.2
Carbon (C), % 0
0.28 to 0.35
Chromium (Cr), % 0
1.5 to 1.8
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
95.4 to 97.1
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0.4 to 0.7
Molybdenum (Mo), % 0
0.2 to 0.4
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0