Stainless steel is a widely used alloy material with excellent corrosion resistance, strength and high temperature resistance. Among the many types of stainless steel, 2205 and 2207 stainless steel plates are two common materials. Although they all belong to the category of Duplex Stainless Steel, there are some differences in composition, performance and application.

1)  In terms of ingredients

2205 stainless steel plate is mainly composed of 22% chromium, 3% molybdenum and 5-6% nickel, the rest is iron. The 2207 stainless steel plate contains 22% chromium, 3% molybdenum, 6-7% nickel and 2-3% copper. The addition of copper makes the 2207 stainless steel plate have better performance in some aspects.

2)  In terms of performance

The main differences between 2205 and 2207 stainless steel plates are corrosion resistance, strength and processing properties. 2205 stainless steel plates have good corrosion resistance, especially in chloride environments. In addition, it has high strength and toughness and is suitable for a variety of structural applications. However, 2207 stainless steel plate because of the copper element, has better corrosion resistance, especially in sulfuric acid, phosphoric acid and other media performance is better. In addition, 2207 stainless steel also has higher strength and hardness, making it more advantageous in some high-load applications.

3) In terms of application

2205 and 2207 stainless steel plates each have their own fields of application. 2205 stainless steel plate because of its good corrosion resistance, strength and cost effectiveness, widely used in petrochemical, seawater desalination, sewage treatment and other fields. 2207 stainless steel plate is widely used in chemical processing, Marine engineering, paper and food processing industries because of its higher corrosion resistance, strength and processing properties.

In summary, 2205 and 2207 stainless steel plates have certain differences in composition, performance and application. 2205 stainless steel plates are suitable for general corrosive environments and structural applications, while 2207 stainless steel plates are suitable for more demanding corrosive environments and more demanding applications due to their higher corrosion resistance, strength and workability. When choosing stainless steel plates, the appropriate materials should be selected according to the specific use environment and needs.