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S21800 Stainless Steel vs. AISI 301L Stainless Steel

Both S21800 stainless steel and AISI 301L stainless steel are iron alloys. They have 88% 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 301L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 40
22 to 50
Fatigue Strength, MPa 330
240 to 530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 510
440 to 660
Tensile Strength: Ultimate (UTS), MPa 740
620 to 1040
Tensile Strength: Yield (Proof), MPa 390
250 to 790

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 900
890
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1310
1390
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.7
Embodied Energy, MJ/kg 45
39
Embodied Water, L/kg 150
130

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
160 to 1580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 27
22 to 37
Strength to Weight: Bending, points 24
21 to 29
Thermal Shock Resistance, points 17
14 to 24

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
70.7 to 78
Manganese (Mn), % 7.0 to 9.0
0 to 2.0
Nickel (Ni), % 8.0 to 9.0
6.0 to 8.0
Nitrogen (N), % 0.080 to 0.18
0 to 0.2
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030