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EN 1.4378 Stainless Steel vs. ZE41A Magnesium

EN 1.4378 stainless steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (9, 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 1.4378 stainless steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
63
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 14 to 34
3.3
Fatigue Strength, MPa 340 to 550
98
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 510 to 680
150
Tensile Strength: Ultimate (UTS), MPa 760 to 1130
210
Tensile Strength: Yield (Proof), MPa 430 to 970
140

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 910
150
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1350
540
Specific Heat Capacity, J/kg-K 480
970
Thermal Expansion, µm/m-K 17
27

Otherwise Unclassified Properties

Base Metal Price, % relative 12
18
Density, g/cm3 7.6
1.9
Embodied Carbon, kg CO2/kg material 2.7
24
Embodied Energy, MJ/kg 39
170
Embodied Water, L/kg 150
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 220
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 2370
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 28 to 41
31
Strength to Weight: Bending, points 24 to 31
41
Thermal Shock Resistance, points 16 to 23
12

Alloy Composition

Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 61.2 to 69
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 11.5 to 14.5
0 to 0.15
Nickel (Ni), % 2.3 to 3.7
0 to 0.010
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
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