Thép Duplex

Duplex Stainless Steel (DSS) refers to about 50%each of the iron body and the Austenitic, and the content of less phase is at least 30%of the stainless steel. In the case of lower C, the CR content is 18%to 28%, and the Ni content is 3%to 10%. Some steel also contain alloy elements such as MO, CU, NB, Ti, N and other alloy elements. This type of steel has the characteristics of Austenitic and ferrite stainless steel. Compared with ferrite, the plasticity and toughness are higher, the no room temperature is brittle, and the corrosion resistance and welding performance of the crystal resistance are significantly improved. The 475 ℃ brittleness and the heating coefficient of 475 ° C in iron stainless steel have the characteristics of super plasticity. Compared with the austenitic stainless steel, high strength and crystal corrosion and chloride stress corrosion have improved significantly. Double -phase stainless steel has excellent pore resistance, and it is also a kind of nickel -saving nickel stainless steel