Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality stainless steel seamless tubes and nickel-nickel alloys. Now let’s introduce austenitic stainless steel seamless pipe.

The austenitic stainless steel seamless steel pipe has an austenite structure at high temperature and room temperature, and there is no organizational transformation. Therefore, the austenitic stainless steel seamless steel pipe is also a kind of stainless steel pipe that has not been strengthened by heat treatment. Seamless steel pipe, but because austenitic stainless steel seamless pipe is easy to process, austenitic stainless steel seamless pipe can be hardened by cold working (cold deformation) to increase its strength. This steel has low solid solution strength and was once the main weakness of austenitic stainless steel seamless steel pipes. In order to solve the intergranular corrosion in the austenite sensitized state and improve the corrosion resistance of steel, the carbon content of ultra-low carbon austenitic stainless steel tubes is generally ≤0.03%, while the corrosion resistance is improved, and the strength steel is reduced. Since the 1970s, nitrogen control (residual nitrogen in steel within the allowable range of the standard, such as N≤0.10% or N≤0.12% or nitrogen alloying (maximum nitrogen can be added to steel under normal pressure) , Such as ≤ 0.40% or 0.50) the appearance of austenitic stainless steel seamless steel pipes, through the addition of nitrogen solid solution strengthening, etc., can also obtain quite high strength, and add nitrogen under high pressure to obtain high nitrogen (available under pressure The amount of nitrogen, that is N> 0.4% or 0.5%) austenitic stainless steel seamless steel pipe, can obtain high strength and good fracture toughness, combined with nitrogen solid solution strengthening and cold work hardening, make some austenitic stainless steel seamless Steel pipes have entered the ranks of high-strength stainless steel seamless pipes. Chromium-nickel austenitic stainless steel seamless steel pipe is the best combination of five types of stainless steel, with the most varieties, the most complete specifications, the widest application range, the fastest growth, the largest output, and the most extensive stainless steel seamless steel pipe in the consumer field. In the world and major stainless steel producing countries, the output of chromium-nickel austenitic stainless steel generally accounts for the total output of stainless steel seamless steel pipes.

Because nickel is a scarce and expensive element, especially during wartime, it is especially scarce. Standard chromium-manganese austenitic stainless steel (American AISI200 steel), containing manganese and nitrogen-based nickel, was introduced in the 1940s. It has been developed for a long time, but its application range is narrow and the output is low. In recent years, the emergence of high-nitrogen, high-strength, ultra-high-strength chromium-manganese austenitic stainless steel seamless steel pipes and the research progress of high-nitrogen manganese-free austenitic stainless steel have attracted widespread attention.

We are constantly moving forward, but we also see the stars and ambitious ambitions. For more information, please contact us: super austenitic stainless steel seamless pipe and tube manufacturer.