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EN 1.4419 Stainless Steel vs. WE54A Magnesium

EN 1.4419 stainless steel belongs to the iron alloys classification, while WE54A magnesium belongs to the magnesium 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 1.4419 stainless steel and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 11 to 17
4.3 to 5.6
Fatigue Strength, MPa 230 to 680
98 to 130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Shear Strength, MPa 410 to 950
150 to 170
Tensile Strength: Ultimate (UTS), MPa 660 to 1590
270 to 300
Tensile Strength: Yield (Proof), MPa 370 to 1240
180

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 790
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
960
Thermal Conductivity, W/m-K 30
52
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
10
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
47

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
34
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.2
29
Embodied Energy, MJ/kg 30
260
Embodied Water, L/kg 110
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95 to 170
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 3920
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 24 to 57
39 to 43
Strength to Weight: Bending, points 22 to 39
49 to 51
Thermal Diffusivity, mm2/s 8.1
28
Thermal Shock Resistance, points 23 to 55
18 to 19

Alloy Composition

Carbon (C), % 0.36 to 0.42
0
Chromium (Cr), % 13 to 14.5
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 82 to 86
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0 to 1.0
0 to 0.030
Molybdenum (Mo), % 0.6 to 1.0
0
Nickel (Ni), % 0
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.010
Sulfur (S), % 0 to 0.015
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Yttrium (Y), % 0
4.8 to 5.5
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3