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EN-MC21320 Magnesium vs. EN 1.8932 Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.8932 steel belongs to the iron alloys. 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 1.8932 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
180
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
20
Fatigue Strength, MPa 95
250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
370
Tensile Strength: Ultimate (UTS), MPa 230
600
Tensile Strength: Yield (Proof), MPa 140
370

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
410
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 66
40
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.5
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
1.7
Embodied Energy, MJ/kg 160
24
Embodied Water, L/kg 980
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
100
Resilience: Unit (Modulus of Resilience), kJ/m3 200
370
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
21
Strength to Weight: Bending, points 50
20
Thermal Diffusivity, mm2/s 40
11
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0 to 0.060
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.010
0 to 0.2
Iron (Fe), % 0 to 0.0050
95.5 to 98.9
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
1.0 to 1.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0.1 to 0.6
Sulfur (S), % 0
0 to 0.015
Vanadium (V), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0