Application Segments

Oil & Gas/CPI Land Based Turbines

Melting Route


Product Description

BÖHLER N400 is a stainless soft martensitic Cr steel with 4% nickel with molybdenum addition and medium corrosion resistance in media with only a low chloride content. To achieve the best possible corrosion resistance with BÖHLER N400, it is essential to polish the surfaces concerned. Good mechanical properties in the quenched and tempered condition. This makes this material very suitable for use in turbine and power plant construction. Very good low-temperature properties. Recommended temperature of use: – 60 to 350°C.
Use for valves, pumps, compressors, centrifuges, hydroelectric machines, turbines, reactor technology, shipbuilding, chemicals.
Special heat treatment to max. 23 HRC is required for sour gas enviroment in petroleum engineering.

Property Features

Soft martensitic chromium stainless steel with 4% nickel addition. Good properties at subzero temperature. The alternative to conventionally melted BÖHLER N400 EXTRA is BÖHLER N400 ISOEXTRA produced by the Electroslag remelting procedure (ESR).

Technical Specifications

Material Numbers

F6NM 1.4313 X3CrNiMo13-4 S41500


10088-3 A182/A182M

Chemical Composition

Chemical composition (average %)
max. 0.05 max. 0.70 max. 1.50 max. 0.040 max. 0.015 12.0 to 14.0 0.30 to 0.70 3.5 to 4.5 min. 0.020

Available product shapes

Information on Long Products ) Presented data refer exclusively to long products. Please observe the detailed explanations at the end of the data sheet (pdf).

  • Long Products
  • Open Die Forgings
  • Semi-Finished Products / Billet

Fairs & Events


Gernot Russ

Head of business area: ENERGY




Walter Sauer

Head of business area: BILLET




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