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EN 1.4443 Stainless Steel vs. ISO-WD21150 Magnesium

EN 1.4443 stainless steel belongs to the iron alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 1.4443 stainless steel and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 34
5.7 to 11
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
17
Tensile Strength: Ultimate (UTS), MPa 490
240 to 290
Tensile Strength: Yield (Proof), MPa 210
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1000
110
Melting Completion (Liquidus), °C 1440
600
Melting Onset (Solidus), °C 1400
550
Specific Heat Capacity, J/kg-K 470
990
Thermal Conductivity, W/m-K 15
100
Thermal Expansion, µm/m-K 16
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
19
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
100

Otherwise Unclassified Properties

Base Metal Price, % relative 20
12
Density, g/cm3 7.9
1.7
Embodied Carbon, kg CO2/kg material 4.0
23
Embodied Energy, MJ/kg 54
160
Embodied Water, L/kg 160
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 110
160 to 460
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
70
Strength to Weight: Axial, points 17
40 to 48
Strength to Weight: Bending, points 18
52 to 58
Thermal Diffusivity, mm2/s 3.9
60
Thermal Shock Resistance, points 11
15 to 17

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 60.4 to 69.5
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 10 to 13
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3