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EN 1.4981 Stainless Steel vs. AISI 201LN Stainless Steel

Both EN 1.4981 stainless steel and AISI 201LN stainless steel are iron alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is AISI 201LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210 to 320
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
25 to 51
Fatigue Strength, MPa 210
340 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 420
530 to 680
Tensile Strength: Ultimate (UTS), MPa 610
740 to 1060
Tensile Strength: Yield (Proof), MPa 240
350 to 770

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 520
410
Maximum Temperature: Mechanical, °C 940
880
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 25
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.6
Embodied Energy, MJ/kg 67
38
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 22
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
230 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 150
310 to 1520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21
27 to 38
Strength to Weight: Bending, points 20
24 to 30
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 14
16 to 23

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
16 to 17.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 59.6 to 66.7
67.9 to 73.5
Manganese (Mn), % 0 to 1.5
6.4 to 7.5
Molybdenum (Mo), % 1.6 to 2.0
0
Nickel (Ni), % 15.5 to 17.5
4.0 to 5.0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.3 to 0.6
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.015