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S32615 Stainless Steel vs. ZK51A Magnesium

S32615 stainless steel belongs to the iron alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 S32615 stainless steel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 28
4.7
Fatigue Strength, MPa 180
62
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 400
160
Tensile Strength: Ultimate (UTS), MPa 620
240
Tensile Strength: Yield (Proof), MPa 250
150

Thermal Properties

Latent Heat of Fusion, J/g 370
340
Maximum Temperature: Mechanical, °C 990
120
Melting Completion (Liquidus), °C 1350
640
Melting Onset (Solidus), °C 1310
550
Specific Heat Capacity, J/kg-K 500
970
Thermal Expansion, µm/m-K 15
26

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 7.6
1.8
Embodied Carbon, kg CO2/kg material 4.4
24
Embodied Energy, MJ/kg 63
160
Embodied Water, L/kg 170
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
10
Resilience: Unit (Modulus of Resilience), kJ/m3 160
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
64
Strength to Weight: Axial, points 23
36
Strength to Weight: Bending, points 21
47
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 16.5 to 19.5
0
Copper (Cu), % 1.5 to 2.5
0 to 0.1
Iron (Fe), % 46.4 to 57.9
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0.3 to 1.5
0
Nickel (Ni), % 19 to 22
0 to 0.010
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 4.8 to 6.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3