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EN-MC65220 Magnesium vs. S41425 Stainless Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while S41425 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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-MC65220 magnesium and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
280
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
17
Fatigue Strength, MPa 110
450
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
570
Tensile Strength: Ultimate (UTS), MPa 270
920
Tensile Strength: Yield (Proof), MPa 200
750

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 160
810
Melting Completion (Liquidus), °C 610
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 80
13
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 27
2.9
Embodied Energy, MJ/kg 210
40

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
150
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1420
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
33
Strength to Weight: Bending, points 49
27
Thermal Diffusivity, mm2/s 61
4.4
Thermal Shock Resistance, points 17
33

Alloy Composition


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Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
12 to 15
Copper (Cu), % 0.050 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.010
74 to 81.9
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.5 to 1.0
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0 to 0.0050
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.010
0 to 0.5
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.0050
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0