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AISI 301L Stainless Steel vs. AISI 201L Stainless Steel

Both AISI 301L stainless steel and AISI 201L stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is AISI 301L stainless steel and the bottom bar is AISI 201L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
190 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 22 to 50
22 to 46
Fatigue Strength, MPa 240 to 530
270 to 530
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 440 to 660
520 to 660
Tensile Strength: Ultimate (UTS), MPa 620 to 1040
740 to 1040
Tensile Strength: Yield (Proof), MPa 250 to 790
290 to 790

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 890
880
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 39
38
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 19
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 300
210 to 300
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1580
220 to 1570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 37
27 to 37
Strength to Weight: Bending, points 21 to 29
24 to 30
Thermal Diffusivity, mm2/s 4.1
4.0
Thermal Shock Resistance, points 14 to 24
16 to 23

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 16 to 18
16 to 18
Iron (Fe), % 70.7 to 78
67.9 to 75
Manganese (Mn), % 0 to 2.0
5.5 to 7.5
Nickel (Ni), % 6.0 to 8.0
3.5 to 5.5
Nitrogen (N), % 0 to 0.2
0 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants