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EN-MC65220 Magnesium vs. S44735 Stainless Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while S44735 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
220
Elastic (Young's, Tensile) Modulus, GPa 44
210
Elongation at Break, % 2.2
21
Fatigue Strength, MPa 110
300
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
82
Shear Strength, MPa 150
390
Tensile Strength: Ultimate (UTS), MPa 270
630
Tensile Strength: Yield (Proof), MPa 200
460

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 980
480
Thermal Expansion, µm/m-K 26
11

Otherwise Unclassified Properties

Base Metal Price, % relative 80
21
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 27
4.4
Embodied Energy, MJ/kg 210
61

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
120
Resilience: Unit (Modulus of Resilience), kJ/m3 450
520
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 62
26
Strength to Weight: Axial, points 40
23
Strength to Weight: Bending, points 49
21
Thermal Shock Resistance, points 17
20

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
60.7 to 68.4
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
3.6 to 4.2
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0
0 to 0.040
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
Titanium (Ti), % 0
0.2 to 1.0
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