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S21800 Stainless Steel vs. Type 2 Magnetic Alloy

Both S21800 stainless steel and Type 2 magnetic alloy are iron alloys. They have 60% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is Type 2 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
2.0 to 38
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 75
72
Tensile Strength: Ultimate (UTS), MPa 740
510 to 910
Tensile Strength: Yield (Proof), MPa 390
260 to 870

Thermal Properties

Latent Heat of Fusion, J/g 340
270
Melting Completion (Liquidus), °C 1360
1420
Melting Onset (Solidus), °C 1310
1370
Specific Heat Capacity, J/kg-K 500
460
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
33
Density, g/cm3 7.5
8.4
Embodied Carbon, kg CO2/kg material 3.1
5.9
Embodied Energy, MJ/kg 45
81
Embodied Water, L/kg 150
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
18 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 390
170 to 2010
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 27
17 to 30
Strength to Weight: Bending, points 24
17 to 25
Thermal Shock Resistance, points 17
16 to 29

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.050
Chromium (Cr), % 16 to 18
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 59.1 to 65.4
48.2 to 53
Manganese (Mn), % 7.0 to 9.0
0 to 0.8
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 8.0 to 9.0
47 to 49
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.010
Silicon (Si), % 3.5 to 4.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030