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ISO-WD32260 Magnesium vs. S44537 Stainless Steel

ISO-WD32260 magnesium belongs to the magnesium alloys classification, while S44537 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 S44537 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 4.5 to 6.0
21
Fatigue Strength, MPa 150 to 190
230
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
79
Shear Strength, MPa 190 to 200
320
Tensile Strength: Ultimate (UTS), MPa 330 to 340
510
Tensile Strength: Yield (Proof), MPa 230 to 250
360

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 120
1000
Melting Completion (Liquidus), °C 600
1480
Melting Onset (Solidus), °C 520
1430
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
21
Thermal Expansion, µm/m-K 27
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 23
3.4
Embodied Energy, MJ/kg 160
50
Embodied Water, L/kg 940
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 19
95
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 700
320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 48 to 51
18
Strength to Weight: Bending, points 56 to 58
18
Thermal Diffusivity, mm2/s 63
5.6
Thermal Shock Resistance, points 19 to 20
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20 to 24
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0
69 to 78.6
Lanthanum (La), % 0
0.040 to 0.2
Magnesium (Mg), % 92.7 to 94.8
0
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0.1 to 0.6
Sulfur (S), % 0
0 to 0.0060
Titanium (Ti), % 0
0.020 to 0.2
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 4.8 to 6.2
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0