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EN 1.4568 Stainless Steel vs. ISO-WD32250 Magnesium

EN 1.4568 stainless steel belongs to the iron alloys classification, while ISO-WD32250 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1.4568 stainless steel and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 2.3 to 21
4.5 to 8.6
Fatigue Strength, MPa 220 to 670
170 to 210
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Shear Strength, MPa 520 to 930
180 to 190
Tensile Strength: Ultimate (UTS), MPa 830 to 1620
310 to 330
Tensile Strength: Yield (Proof), MPa 330 to 1490
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Mechanical, °C 890
120
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 480
980
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.7
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 40
160
Embodied Water, L/kg 140
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36 to 140
14 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 5710
630 to 930
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
67
Strength to Weight: Axial, points 30 to 58
49 to 51
Strength to Weight: Bending, points 25 to 40
58 to 60
Thermal Diffusivity, mm2/s 4.3
72
Thermal Shock Resistance, points 23 to 46
19 to 20

Alloy Composition

Aluminum (Al), % 0.7 to 1.5
0
Carbon (C), % 0 to 0.090
0
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 70.9 to 76.8
0
Magnesium (Mg), % 0
94.9 to 97.1
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 6.5 to 7.8
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3