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ISO-WD32260 Magnesium vs. S44660 Stainless Steel

ISO-WD32260 magnesium belongs to the magnesium alloys classification, while S44660 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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-WD32260 magnesium and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
210
Elongation at Break, % 4.5 to 6.0
20
Fatigue Strength, MPa 150 to 190
330
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
81
Shear Strength, MPa 190 to 200
410
Tensile Strength: Ultimate (UTS), MPa 330 to 340
660
Tensile Strength: Yield (Proof), MPa 230 to 250
510

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 970
480
Thermal Conductivity, W/m-K 110
17
Thermal Expansion, µm/m-K 27
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
21
Density, g/cm3 1.9
7.7
Embodied Carbon, kg CO2/kg material 23
4.3
Embodied Energy, MJ/kg 160
61
Embodied Water, L/kg 940
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 19
120
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 700
640
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 48 to 51
24
Strength to Weight: Bending, points 56 to 58
22
Thermal Diffusivity, mm2/s 63
4.5
Thermal Shock Resistance, points 19 to 20
21

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
25 to 28
Iron (Fe), % 0
60.4 to 71
Magnesium (Mg), % 92.7 to 94.8
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0
Zinc (Zn), % 4.8 to 6.2
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0