Lean Duplex 1.4162, X2CrMnNiN21-5-1, LDX 2101, UNS S32101 high-alloy ferritic-austenitic steel according to EN 10088-1.

 

Standards Steel Grades
Chemical Composition %
C: Mn: Si: P: S: Cr: Mo: Ni: Cu: N:
Outokumpu LDX 2101 ®
<0.03 4.0 - 6.0 <1.0 <0.04 <0.03 21.0 - 22.0 0.1 - 0.8 1.35 - 1.70 0.1 - 0.8 0.22
EN 1.4162 - X2CrMnNiN21-5-1
<0.04 4.0 - 6.0 <1.0 <0.04 <0.015 21.0 - 22.0 0.1 - 0.8 1.35 - 1.90 0.1 - 0.8 0.20 - 0.25
UNS S32101 - S 32101
<0.04 4.0 - 6.0 <1.0 <0.04 <0.03 19.5 - 22.0 0.1 - 0.8 1.00 - 3.00 0.1 - 1.0 0.15 - 0.25
ASTM A 182 F69 - A182 F 69
<0.4 4.0 - 6.0 <1.0 <0.04 <0.03 21.0 - 22.0 0.1 - 0.8 1.35 - 1.70 0.1 - 0.8 0.20 - 0.25

 

Lean Duplex LDX 2101 ®, 1.4162 steel - description and application

X2CrMnNiN21-5-1 is another grade of austenitic-ferritic bifurcated stainless steel, which chemical composition with limited nickel content not significantly reduces the price of raw material, it also is improving mechanical properties (which supports Nitride) and resistance to corrosion - especially stress, intercrystalline and crevice corrosion.

The LDX 2101 grade and its alternatives, eg. UNS S32101, exhibits much better corrosion resistance in comparison to AISI 304 / 304L and AISI 316Ti, AISI 316 / 316L austenitic grades. Steel exhibits high resistance to cracking, better fatigue resistance, smaller cross-sectional areas for production, higher two-phase stability thanks to Mn, work temperature up to 600 ℃, good weldability and machinability.

The above-mentioned Lean Duplex, unfortunately, requires a significantly higher strength during cold working than standard austenitic stainless steels. LDX 2101 is used in the shipbuilding, marine, petroleum, petrochemical, chemical, nitrogen, aerospace, cryogenic, pulp and paper industries, power engineering, agitator construction, sewage treatment plants, screws, shafts, bushes, aircraft parts, radiator parts, heat exchangers pipelines, heavy-duty tankers, pressure and chemical vessels and silos working in contact with oils, fuels, structures and cargo tanks of chemical tankers.


Mechanical properties of X2CrMnNiN21-5-1, 1.4162 +AT steel

  • For cold-rolled strips:
    • Tensile strength, Rm = 700 - 900 MPa
    • Yield point, Re > 530 MPa
    • Elongation <3mm thickness, A > 20%
    • Elongation >3mm thickness, A > 30%
  • For hot-rolled strips:
    • Tensile strength, Rm = 680 - 900 MPa
    • Yield point, Re > 480 MPa
    • Elongation, A > 20%
    • Notch toughness with dimensions <10mm, KV20℃ > 40J
  • For hot-rolled steel sheets:
    • Tensile strength, Rm = 650 - 850 MPa
    • Yield point, Re > 450 MPa
    • Elongation <3mm thickness, A > 30%
    • Notch toughness with dimensions <10mm, KV20℃ > 60J
  • Yield point at individual work temperatures:
    • Temperature 100℃ = Re > 365 MPa
    • Temperature 150℃ = Re > 325 MPa
    • Temperature 200℃ = Re > 295 MPa
    • Temperature 250℃ = Re > 275 MPa
  • Other mechanical properties
    • Modulus of elasticity, E: 195 GPA
    • Resistance: 0,75 mkOhm*m
    • Heat capacity: 500 J/kg * K
    • Thermal conductivity at 20°C: 15 W/m * K
    • Linear Expansion Factor: 13.0 - 14.5 * 106 K-1
    • Density: 7,7 g/cm3

 


Heat treatment of LDX 2101 / 1.4162:

  • Annealing at 1020 - 1080°C with cooling in water or air

 


In the 1.4162 grade the company delivers:

 


Other indications and equivalents of LDX 2101 steel:

1.4162, LDX 2101, UNS S32101, X2CrMnNiN21-5-1, steel F69, Lean Duplex 2101, CRS32101, WPS32101, X2CrMnNiN2151.


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