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AISI 201L Stainless Steel vs. S82121 Stainless Steel

Both AISI 201L stainless steel and S82121 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 201L stainless steel and the bottom bar is S82121 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 320
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 22 to 46
28
Fatigue Strength, MPa 270 to 530
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 520 to 660
470
Tensile Strength: Ultimate (UTS), MPa 740 to 1040
730
Tensile Strength: Yield (Proof), MPa 290 to 790
510

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
430
Maximum Temperature: Mechanical, °C 880
1020
Melting Completion (Liquidus), °C 1410
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
14
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 38
40
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 19
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 300
180
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1570
660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 37
26
Strength to Weight: Bending, points 24 to 30
23
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 16 to 23
20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.035
Chromium (Cr), % 16 to 18
21 to 23
Copper (Cu), % 0
0.2 to 1.2
Iron (Fe), % 67.9 to 75
66.7 to 75.4
Manganese (Mn), % 5.5 to 7.5
1.0 to 2.5
Molybdenum (Mo), % 0
0.3 to 1.3
Nickel (Ni), % 3.5 to 5.5
2.0 to 4.0
Nitrogen (N), % 0 to 0.25
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010