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EN 1.4821 Stainless Steel vs. EN-MC65220 Magnesium

EN 1.4821 stainless steel belongs to the iron alloys classification, while EN-MC65220 magnesium belongs to the magnesium alloys. There are 30 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 1.4821 stainless steel and the bottom bar is EN-MC65220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
80
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 18
2.2
Fatigue Strength, MPa 280
110
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
17
Shear Strength, MPa 450
150
Tensile Strength: Ultimate (UTS), MPa 730
270
Tensile Strength: Yield (Proof), MPa 450
200

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1410
610
Melting Onset (Solidus), °C 1370
550
Specific Heat Capacity, J/kg-K 490
980
Thermal Conductivity, W/m-K 17
110
Thermal Expansion, µm/m-K 12
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 15
80
Density, g/cm3 7.6
1.9
Embodied Carbon, kg CO2/kg material 2.9
27
Embodied Energy, MJ/kg 41
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 500
450
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
62
Strength to Weight: Axial, points 26
40
Strength to Weight: Bending, points 23
49
Thermal Diffusivity, mm2/s 4.6
61
Thermal Shock Resistance, points 21
17

Alloy Composition

Carbon (C), % 0.1 to 0.2
0
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 0
0.050 to 0.1
Iron (Fe), % 64.2 to 71.1
0 to 0.010
Magnesium (Mg), % 0
93.8 to 96.8
Manganese (Mn), % 0 to 2.0
0 to 0.15
Nickel (Ni), % 3.5 to 5.5
0 to 0.0050
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.8 to 1.5
0 to 0.010
Silver (Ag), % 0
1.3 to 1.7
Sulfur (S), % 0 to 0.015
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010