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EN 1.4374 Stainless Steel vs. ZE41A Magnesium

EN 1.4374 stainless steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 31 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 1.4374 stainless steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
63
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 40
3.3
Fatigue Strength, MPa 340
98
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 550
150
Tensile Strength: Ultimate (UTS), MPa 800
210
Tensile Strength: Yield (Proof), MPa 400
140

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 920
150
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1360
540
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
27
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
130

Otherwise Unclassified Properties

Base Metal Price, % relative 14
18
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.9
24
Embodied Energy, MJ/kg 42
170
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 400
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 29
31
Strength to Weight: Bending, points 25
41
Thermal Diffusivity, mm2/s 4.0
59
Thermal Shock Resistance, points 17
12

Alloy Composition

Carbon (C), % 0.050 to 0.1
0
Chromium (Cr), % 17.5 to 18.5
0
Copper (Cu), % 0 to 0.4
0 to 0.1
Iron (Fe), % 63.5 to 67.9
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 9.0 to 10
0 to 0.15
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 5.0 to 6.0
0 to 0.010
Nitrogen (N), % 0.25 to 0.32
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.030
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 0.3