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EN 1.4122 Stainless Steel vs. EN-MC35110 Magnesium

EN 1.4122 stainless steel belongs to the iron alloys classification, while EN-MC35110 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 1.4122 stainless steel and the bottom bar is EN-MC35110 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 14
3.1
Fatigue Strength, MPa 260 to 360
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 480 to 520
130
Tensile Strength: Ultimate (UTS), MPa 790 to 850
230
Tensile Strength: Yield (Proof), MPa 450 to 630
150

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 870
140
Melting Completion (Liquidus), °C 1440
600
Melting Onset (Solidus), °C 1400
520
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 10
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.4
24
Embodied Energy, MJ/kg 33
170
Embodied Water, L/kg 120
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 28 to 31
34
Strength to Weight: Bending, points 25 to 26
44
Thermal Diffusivity, mm2/s 4.0
61
Thermal Shock Resistance, points 28 to 30
14

Alloy Composition

Carbon (C), % 0.33 to 0.45
0
Chromium (Cr), % 15.5 to 17.5
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 77.2 to 83.4
0 to 0.010
Magnesium (Mg), % 0
92 to 95.4
Manganese (Mn), % 0 to 1.5
0 to 0.15
Molybdenum (Mo), % 0.8 to 1.3
0
Nickel (Ni), % 0 to 1.0
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
0.75 to 1.8
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010