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EN 1.4903 Stainless Steel vs. WE54A Magnesium

EN 1.4903 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 (5, 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 1.4903 stainless steel and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 20 to 21
4.3 to 5.6
Fatigue Strength, MPa 320 to 330
98 to 130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
17
Shear Strength, MPa 420
150 to 170
Tensile Strength: Ultimate (UTS), MPa 670 to 680
270 to 300
Tensile Strength: Yield (Proof), MPa 500
180

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 650
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
570
Specific Heat Capacity, J/kg-K 470
960
Thermal Conductivity, W/m-K 26
52
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
10
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
47

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
34
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 2.6
29
Embodied Energy, MJ/kg 36
260
Embodied Water, L/kg 88
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 650
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 24
39 to 43
Strength to Weight: Bending, points 22
49 to 51
Thermal Diffusivity, mm2/s 7.0
28
Thermal Shock Resistance, points 23
18 to 19

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0 to 0.3
0 to 0.030
Iron (Fe), % 87.1 to 90.5
0 to 0.010
Lithium (Li), % 0
0 to 0.2
Magnesium (Mg), % 0
88.7 to 93.4
Manganese (Mn), % 0.3 to 0.6
0 to 0.030
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.0050
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0 to 0.010
Sulfur (S), % 0 to 0.015
0
Unspecified Rare Earths, % 0
1.5 to 4.0
Vanadium (V), % 0.18 to 0.25
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