​​​​​​​​​​​​​​​​​​​​​​​​​​​​Austenitic gra​des​​​ –
your first choice for
most ​​applicat​​ions​

A wide range of industries – including chemicals, pharmaceuticals, textiles, food and drink and pulp and paper – already rely on Outokumpu austenitic 200 and 300- series stainless steels.  

Outokumpu austenitic stainless steels include the workhorse grade Core 304/4301 EN 1.4301 (ASTM 304) as well as enhanced grades for improved corrosion resistance. Outokumpu ​Radionox®​ is used in the nuclear industry.

The latest addition to Outokumpu austenitic stainless steels is the Supra 316​plus​, which is completely new in the market. The high-chromium austenitic 4420 grade is acid-resistant an​d is suitable for example in:

  • construction
  • pulp and paper
  • structures
  • piping
  • water treatment applications

As with all our stainless steels, austenitic grades are produced to the strictest quality standards and performance requirements. They have good fabricability, resistance to atmospheric corrosion and resistance to many organic and inorganic compounds.

Put our expertise to work for you.
Check Stainless steel finder to browse available grades, dimensions and surface finishes by product form.
Contact Outokumpu sales to discuss more

Product properties​​​

Austenitic stainless steels benefit from very high ductility and toughness. When delivered in the quench-annealed state they are very soft and formable, and when delivered as cold stretched or hard rolled they have increased hardness and strength. The strength of austenitic grades is increased with increased levels of carbon, nitrogen and, to a certain extent, molybdenum.

For more information

  • View all technical specifications online including mechanical properties, chemical composition, physical properties and corrosion characteristics.

Compare technical specifications for all Outokumpu steel grades



In general, austenitic stainless steels have excellent weldability. They do not require post-weld treatment and can be readily welded by a full range of conventional welding methods, including:
  • Shielded metal arc welding (SMAW)
  • Gas tungsten arc welding, TIG (GTAW)
  • Gas metal arc welding, MIG (GMAW)
  • Flux-cored arc welding (FCAW)
  • Plasma arc welding (PAW)
  • Submerged arc welding (SAW)

For more information


 Corrosion resistance

Standard austenitic stainless steels are general purpose steels with good corrosion resistance to atmospheric corrosion and to many organic and inorganic chemicals.

This makes them well suited for processing, storing and transporting foodstuffs and beverages and many other applications.

For more information

  • Open the Downloads tab to download Outokumpu austenitic stainless steel datasheets
  • Check Steel Finder to find information about PRE (Pitting Resistance Equivalent), CPT (Critical Pitting Temperature) and CCT value (Critical Corrosion Temperature)
  • Check the Online Corrosion Table and search by chemical name or formula corrosion rates for stainless steel grades
  • Find an Outokumpu sales office near you to get the printed version of the Outokumpu Corrosion Handbook




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Outokumpu stainless steel works in the extremes in power plant in Jyväskylä, Finlandhttp://www.outokumpu.com/en/stainless-news/cases/stainless-steel-works-in-the-extremes-in-power-plantOutokumpu stainless steel works in the extremes in power plant in Jyväskylä, FinlandAleksi VuorenmaaProject manager, Jyväskylä Energy GroupWe needed a material that could withstand the conditions in the flue gas duct and chimney, while also being cost-efficient. Stainless steel responded to these expectations well. The main reason for our choice was its high corrosion resistance.
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