Duplex stainless steel,
Definition of Duplex stainless steel:
It contains a large amount of chromium and a small amount of nickel. It is called a duplex because it combines the molecular structure of asynthetic (chromium nickel) and ferritic (chromium only). Duplex stainless steels offer more strength and resistance to stress corrosion than most other types of stainless steels and are mainly used in cleaning plants, heat exchangers and marine applications.
Meaning of Duplex stainless steel & Duplex stainless steel Definition