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ISO-WD32250 Magnesium vs. EN 1.4542 Stainless Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.4542 stainless steel belongs to the iron 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 ISO-WD32250 magnesium and the bottom bar is EN 1.4542 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.5 to 8.6
5.7 to 20
Fatigue Strength, MPa 170 to 210
370 to 640
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 180 to 190
550 to 860
Tensile Strength: Ultimate (UTS), MPa 310 to 330
880 to 1470
Tensile Strength: Yield (Proof), MPa 240 to 290
580 to 1300

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 120
860
Melting Completion (Liquidus), °C 600
1430
Melting Onset (Solidus), °C 550
1380
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
2.7
Embodied Energy, MJ/kg 160
39
Embodied Water, L/kg 950
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
62 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
880 to 4360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 49 to 51
31 to 52
Strength to Weight: Bending, points 58 to 60
26 to 37
Thermal Diffusivity, mm2/s 72
4.3
Thermal Shock Resistance, points 19 to 20
29 to 49

Alloy Composition


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Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 0
69.6 to 79
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.6
Nickel (Ni), % 0
3.0 to 5.0
Niobium (Nb), % 0
0 to 0.45
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0