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AISI 316L Stainless Steel vs. S21800 Stainless Steel

Both AISI 316L stainless steel and S21800 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 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 AISI 316L stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 350
210
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.0 to 50
40
Fatigue Strength, MPa 170 to 450
330
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 80
88
Shear Modulus, GPa 78
75
Shear Strength, MPa 370 to 690
510
Tensile Strength: Ultimate (UTS), MPa 530 to 1160
740
Tensile Strength: Yield (Proof), MPa 190 to 870
390

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 870
900
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1380
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 19
15
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 3.9
3.1
Embodied Energy, MJ/kg 53
45
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 26
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 230
250
Resilience: Unit (Modulus of Resilience), kJ/m3 93 to 1880
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 19 to 41
27
Strength to Weight: Bending, points 18 to 31
24
Thermal Shock Resistance, points 12 to 25
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 16 to 18
16 to 18
Iron (Fe), % 62 to 72
59.1 to 65.4
Manganese (Mn), % 0 to 2.0
7.0 to 9.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 10 to 14
8.0 to 9.0
Nitrogen (N), % 0 to 0.1
0.080 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.060
Silicon (Si), % 0 to 0.75
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030