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EN-MC65220 Magnesium vs. S21460 Stainless Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while S21460 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
250
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
46
Fatigue Strength, MPa 110
390
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
580
Tensile Strength: Ultimate (UTS), MPa 270
830
Tensile Strength: Yield (Proof), MPa 200
430

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Mechanical, °C 160
920
Melting Completion (Liquidus), °C 610
1380
Melting Onset (Solidus), °C 550
1330
Specific Heat Capacity, J/kg-K 980
480
Thermal Expansion, µm/m-K 26
18

Otherwise Unclassified Properties

Base Metal Price, % relative 80
14
Density, g/cm3 1.9
7.6
Embodied Carbon, kg CO2/kg material 27
3.0
Embodied Energy, MJ/kg 210
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
320
Resilience: Unit (Modulus of Resilience), kJ/m3 450
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
30
Strength to Weight: Bending, points 49
26
Thermal Shock Resistance, points 17
17

Alloy Composition


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Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
57.3 to 63.7
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
14 to 16
Nickel (Ni), % 0 to 0.0050
5.0 to 6.0
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.010
0 to 1.0
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.030
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