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S21800 Stainless Steel vs. AISI 201L Stainless Steel

Both S21800 stainless steel and AISI 201L stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is AISI 201L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
190 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
22 to 46
Fatigue Strength, MPa 330
270 to 530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 510
520 to 660
Tensile Strength: Ultimate (UTS), MPa 740
740 to 1040
Tensile Strength: Yield (Proof), MPa 390
290 to 790

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 900
880
Melting Completion (Liquidus), °C 1360
1410
Melting Onset (Solidus), °C 1310
1370
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.6
Embodied Energy, MJ/kg 45
38
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 390
220 to 1570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
27 to 37
Strength to Weight: Bending, points 24
24 to 30
Thermal Shock Resistance, points 17
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16 to 18
16 to 18
Iron (Fe), % 59.1 to 65.4
67.9 to 75
Manganese (Mn), % 7.0 to 9.0
5.5 to 7.5
Nickel (Ni), % 8.0 to 9.0
3.5 to 5.5
Nitrogen (N), % 0.080 to 0.18
0 to 0.25
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 3.5 to 4.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030