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ISO-WD21150 Magnesium vs. EN 1.4325 Stainless Steel

ISO-WD21150 magnesium belongs to the magnesium alloys classification, while EN 1.4325 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 ISO-WD21150 magnesium and the bottom bar is EN 1.4325 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 5.7 to 11
45
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150 to 170
450
Tensile Strength: Ultimate (UTS), MPa 240 to 290
650
Tensile Strength: Yield (Proof), MPa 120 to 200
210

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 110
930
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 550
1380
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 100
16
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 19
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
3.0
Embodied Energy, MJ/kg 160
42
Embodied Water, L/kg 980
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 24
230
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 460
110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 70
25
Strength to Weight: Axial, points 40 to 48
23
Strength to Weight: Bending, points 52 to 58
21
Thermal Diffusivity, mm2/s 60
4.3
Thermal Shock Resistance, points 15 to 17
15

Alloy Composition

Aluminum (Al), % 2.4 to 3.6
0
Carbon (C), % 0
0.030 to 0.15
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
67.8 to 75
Magnesium (Mg), % 94 to 97
0
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Nickel (Ni), % 0 to 0.0050
8.0 to 10
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.5 to 1.5
0
Residuals, % 0 to 0.3
0