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Ancient times to the present, has reached a few corrosion-resistant iron. The most famous and largest example, India's city of Delhi, "Delhi's Standing Iron" built by Kumara Gupta I In 400 mm.

However, dissimilar stainless steel, chrome, not a feature of the corrosion of iron monument, is its high phosphorus. Phosphorus, which are favorable weather conditions on the surface of the monument, consisting of iron-oxide and phosphorus to create a protective surface layer provides resistance to corrosion of iron.

The first time in 1821, was aware by the French metallurgists Pierre Berthier, iron-chromium alloys that corrosion resistance. During that period, could not be passed for use as a practical technology chromium, and iron, as is now able to hold your are not sufficient for processing.

German Hans Goldschmidt found that chromium-carbon method of production, which opened the way alimunotermik , in 1890s. From that date, many studies have been conducted on stainless steel.

The beginning of the modern stainless steels, by British metallurgists Harry Brearly was discovered was made incidentally while doing research to develop rifle barrel, in 1913’s. This has been the starting point of the stainless steel.

More after the trials, referred to as 18-8 (304) austenitic stainless steel on the market came nearly in the 1920's and applications, has been a great success. By the 1930s, stainless steel has an indispensable place in the industry and our daily lives. These developments continued with the other alloying elements, the researchers have developed over time, we know today, the quality of stainless steel.

Duplex stainless steels for use in the paper industry developed as a sulfide, nearly 70 years ago now. In the first place, duplex alloys used in cooling water and other chloride bearing sharp to cope with the problem of corrosion caused by chemical process fluids.

In the 1970's, a second-generation duplex stainless steel was developed with the development of North Sea gas and oil stations. Accordingly, the addition of nitrogen to a certain extent increased the toughness, welding, corrosion resistance to chloride. The most commonly used, called the mixed composition of UNS S31803, UNS S32205 duplex steel is standardized in 1996.