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EN-MC21320 Magnesium vs. EN 1.4372 Stainless Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while EN 1.4372 stainless 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-MC21320 magnesium and the bottom bar is EN 1.4372 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
220
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 7.5
47
Fatigue Strength, MPa 95
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 130
560
Tensile Strength: Ultimate (UTS), MPa 230
790
Tensile Strength: Yield (Proof), MPa 140
350

Thermal Properties

Latent Heat of Fusion, J/g 370
280
Maximum Temperature: Mechanical, °C 110
880
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 530
1370
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 91
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.6
7.7
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
38
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
310
Resilience: Unit (Modulus of Resilience), kJ/m3 200
320
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 38
29
Strength to Weight: Bending, points 50
25
Thermal Diffusivity, mm2/s 40
4.0
Thermal Shock Resistance, points 13
17

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
67.5 to 75
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
5.5 to 7.5
Nickel (Ni), % 0 to 0.0020
3.5 to 5.5
Nitrogen (N), % 0
0.050 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0