Advanced materials






Stainless advanced materials are stainless steel-based materials that are modified or developed to achieve better properties than standard stainless steels. They may have higher strength, improved corrosion or wear resistance, improved mechanical properties at high temperatures, or specific magnetic or electrical properties.
Such types of materials include:
  1. Duplex and superduplex stainless steel: This steel combines the properties of austenitic and ferritic stainless steel. It has greater strength and corrosion resistance than conventional austenitic stainless steel. Example of composition: Fe22CrNi6Mo2, two-phase austenitic-ferritic (duplex) structure.
  2. Superaustenitic steel: This steel grade contains a high proportion of chromium, nickel and molybdenum, making the resulting material resistant to corrosion in aggressive chemical environments. Typical composition: Fe20Cr20Ni6Mo, fully austenitic structure.
  3. Superferritic steel: It is designed for higher corrosion resistance in specific environments, such as contact with salt water. Example of composition: FeCr30Mo4.
  4. Steel with high nitrogen content: By adding nitrogen to stainless steel, strength and corrosion resistance can be improved without adding expensive elements such as nickel.
  5. Nickel alloys: Example of composition 60-80 wt % Ni, as well as Fe, Cr.



These advanced materials are widely used in harsh conditions where high reliability, durability and long service life are required. Such environments can be found in the chemical, power and automotive industries.

Currently, our company has technological procedures for pickling and passivation of these materials. Due to weak support in current Czech and foreign standards, we decided to start working with the University of Chemistry and Technology in Prague to create technological procedures that will lead to optimization of pickling and passivation processes with the highest possible efficiency, which could therefore increase corrosion resistance to the maximum possible level.
  1. The project was created in 2023 and is entitled “Development of technology for surface optimization of special high-alloy materials”. The aim is the following outputs:
  2. Optimized pickling technology for duplex and superduplex corrosion-resistant steel.
  3. Optimized pickling technology for ferritic and superferritic corrosion-resistant steel.
  4. Optimized pickling technology for superaustenitic corrosion-resistant steel.
  5. Optimized nickel alloy pickling technology.
  6. Proven technology – methodology for assessing the resistance of highly alloyed materials after pickling.






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