Core 201LN/4372
ASTM TYPE 201LN / UNS S20153

General characteristics

This low-nickel stainless steel also has properties approaching Core 301/4310, but has a higher strength than Core 201/4372. It hardens more quickly due to its higher work hardening coefficient.

Typical applications

  • Railroad freight cars
  • Truck trailers
  • Coal handling
  • Bulk transport equipment


Product forms, available sizes and finishes


Product typeFinishesThicknessWidth
Cold rolled coil and sheet2B, 2D1,00-3,43≤ 1524
Hot rolled coil and plateHot rolled white2,79-9,53≤ 1524
Chemical composition


The typical chemical composition for this grade is given in the table below, together with composition limits given for the product according to different standards. The required standard will be fully met as specified on the order.

The chemical composition is given as % by mass.

TypicalCore 201LN/43720.026.616.24.10.16Cu:0.75
ASTM A240/A240MTYPE 201LN / UNS S20153<0.0306.4-7.516.0-17.54.0-5.00.10-0.25Si:<0.75 P:<0.045 S:<0.015 Cu:<1
Mechanical properties



StandardGradeRp0.2Rp1.0RmElongationImpact strengthRockwellHBHV


Corrosion resistance


Pitting corrosion resistanceCrevice corrosion resistance

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %N
CPT Corrosion Pitting Temperature as measured in the Avesta Cell (ASTM G 150), in a 1M NaCl solution (35,000 ppm or mg/l chloride ions).
CCT Critical Crevice Corrosion Temperature is the critical crevice corrosion temperature which is obtained by laboratory tests according to ASTM G 48 Method F



Physical properties



DensityModulus of elasticityThermal exp. at 100 °CThermal conductivityThermal capacityElectrical resistanceMagnetizable

*) Austenitic stainless steel grades may be magnetizable to a certain degree after cold deformation, e.g. in temper rolled condition.



More detailed information concerning welding procedures can be obtained from the Outokumpu Welding Handbook, available from our sales offices.

Standards & approvals



ASTM A240/A240MTYPE 201LN / UNS S20153