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ZC63A Magnesium vs. S31266 Stainless Steel

ZC63A magnesium belongs to the magnesium alloys classification, while S31266 stainless steel belongs to the iron alloys. There are 30 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 ZC63A magnesium and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 48
210
Elongation at Break, % 3.3
40
Fatigue Strength, MPa 94
400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 19
81
Shear Strength, MPa 130
590
Tensile Strength: Ultimate (UTS), MPa 220
860
Tensile Strength: Yield (Proof), MPa 130
470

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 98
1100
Melting Completion (Liquidus), °C 550
1470
Melting Onset (Solidus), °C 470
1420
Specific Heat Capacity, J/kg-K 950
460
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 26
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
37
Density, g/cm3 2.1
8.2
Embodied Carbon, kg CO2/kg material 22
6.5
Embodied Energy, MJ/kg 150
89
Embodied Water, L/kg 920
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
290
Resilience: Unit (Modulus of Resilience), kJ/m3 190
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
29
Strength to Weight: Bending, points 38
24
Thermal Diffusivity, mm2/s 58
3.1
Thermal Shock Resistance, points 12
18

Alloy Composition


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Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
23 to 25
Copper (Cu), % 2.4 to 3.0
1.0 to 2.5
Iron (Fe), % 0
34.1 to 46
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 0 to 0.010
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0