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S28200 Stainless Steel vs. ZK51A Magnesium

S28200 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 S28200 stainless steel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 45
4.7
Fatigue Strength, MPa 430
62
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 610
160
Tensile Strength: Ultimate (UTS), MPa 870
240
Tensile Strength: Yield (Proof), MPa 460
150

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Mechanical, °C 900
120
Melting Completion (Liquidus), °C 1380
640
Melting Onset (Solidus), °C 1330
550
Specific Heat Capacity, J/kg-K 480
970
Thermal Expansion, µm/m-K 18
26

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 7.6
1.8
Embodied Carbon, kg CO2/kg material 2.8
24
Embodied Energy, MJ/kg 41
160
Embodied Water, L/kg 160
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 330
10
Resilience: Unit (Modulus of Resilience), kJ/m3 540
260
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
64
Strength to Weight: Axial, points 32
36
Strength to Weight: Bending, points 27
47
Thermal Shock Resistance, points 17
15

Alloy Composition

Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0.75 to 1.3
0 to 0.1
Iron (Fe), % 57.7 to 64.1
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 17 to 19
0
Molybdenum (Mo), % 0.75 to 1.3
0
Nickel (Ni), % 0
0 to 0.010
Nitrogen (N), % 0.4 to 0.6
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
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