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AISI 201LN Stainless Steel vs. EN 1.4821 Stainless Steel

Both AISI 201LN stainless steel and EN 1.4821 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is AISI 201LN stainless steel and the bottom bar is EN 1.4821 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25 to 51
18
Fatigue Strength, MPa 340 to 540
280
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 530 to 680
450
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
730
Tensile Strength: Yield (Proof), MPa 350 to 770
450

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 880
1100
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
15
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.6
2.9
Embodied Energy, MJ/kg 38
41
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 20
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
500
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27 to 38
26
Strength to Weight: Bending, points 24 to 30
23
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 16 to 23
21

Alloy Composition

Carbon (C), % 0 to 0.030
0.1 to 0.2
Chromium (Cr), % 16 to 17.5
24.5 to 26.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 67.9 to 73.5
64.2 to 71.1
Manganese (Mn), % 6.4 to 7.5
0 to 2.0
Nickel (Ni), % 4.0 to 5.0
3.5 to 5.5
Nitrogen (N), % 0.1 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0.8 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015