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EN-MC21320 Magnesium vs. EN 1.0225 Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.0225 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 1.0225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
6.7 to 24
Fatigue Strength, MPa 95
170 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
280 to 290
Tensile Strength: Ultimate (UTS), MPa 230
440 to 500
Tensile Strength: Yield (Proof), MPa 140
230 to 380

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 110
400
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
52
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
1.4
Embodied Energy, MJ/kg 160
18
Embodied Water, L/kg 980
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
31 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 200
140 to 390
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
16 to 18
Strength to Weight: Bending, points 50
16 to 18
Thermal Diffusivity, mm2/s 40
14
Thermal Shock Resistance, points 13
14 to 16

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.21
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
98 to 100
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0 to 1.4
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 0.35
Sulfur (S), % 0
0 to 0.045
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0