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EN 1.4742 Stainless Steel vs. WE54A Magnesium

EN 1.4742 stainless steel belongs to the iron alloys classification, while WE54A magnesium belongs to the magnesium alloys. There are 31 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 1.4742 stainless steel and the bottom bar is WE54A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
85
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 17
4.3 to 5.6
Fatigue Strength, MPa 180
98 to 130
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Shear Strength, MPa 370
150 to 170
Tensile Strength: Ultimate (UTS), MPa 600
270 to 300
Tensile Strength: Yield (Proof), MPa 300
180

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 1000
170
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
570
Specific Heat Capacity, J/kg-K 490
960
Thermal Conductivity, W/m-K 19
52
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
10
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
47

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
34
Density, g/cm3 7.6
1.9
Embodied Carbon, kg CO2/kg material 2.2
29
Embodied Energy, MJ/kg 32
260
Embodied Water, L/kg 130
900

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
10 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 230
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 22
39 to 43
Strength to Weight: Bending, points 21
49 to 51
Thermal Diffusivity, mm2/s 5.1
28
Thermal Shock Resistance, points 21
18 to 19

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0
Carbon (C), % 0 to 0.12
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 77.2 to 81.6
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
Nickel (Ni), % 0
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.7 to 1.4
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