Compared to 2205 and 2206, 2207 duplex stainless steel has higher nickel and molybdenum content, making it have better corrosion resistance and wear resistance. At the same time, its rich biphasic structure also gives it excellent toughness and strength, and to some extent improves its ability to resist stress corrosion cracking. These unique performance characteristics make 2207 duplex stainless steel more suitable for use in harsh environments such as marine engineering and chemical industry.

The difference between 2205 and 2206

2205 and 2206 are two widely used duplex stainless steels that can provide high strength, high toughness, and good corrosion resistance, but there are still some subtle differences between the two. Firstly, the content of molybdenum and chromium in 2205 is higher than that in 2206, making it more corrosion-resistant; Secondly, 2205 also contains a certain amount of molybdenum, which can improve its resistance to stress corrosion cracking; Finally, in terms of welding, 2205 is easier to weld than 2206.

Application scenarios of different models

Due to the different performance characteristics of different types of duplex stainless steel, there are significant differences in their application fields. 2207 duplex stainless steel is suitable for use in highly corrosive environments such as marine engineering and petrochemical industry due to its better corrosion resistance and wear resistance; 2205 duplex stainless steel is widely used in marine engineering, chemical industry, petroleum industry and other fields due to its high corrosion resistance and stress corrosion cracking ability; Due to its excellent toughness, 2206 duplex stainless steel is suitable for manufacturing structural components such as high-pressure vessels, ships, and aircraft.