The Polinox Protect technique has been developed for making the three top layers of the passive oxide skin as iron-free as possible.

When combining this method with our H2Ofinish the result is an extraordinary resistance to corrosion. Surface offers little room for dirt and debris to settle and a higher potential chroom versus iron is achieved. As the percentage of iron in the top layers decreases to almost zero, the characteristics of the surface is changed leading to a surface with high corrosion resistance and for that means more applications for the wellknown AISI304 and 316.

This technique includes only the use of organic acids, no need for environmental permits. This technique can therefore also be applied on site, worldwide.