High-temperature-resistant steel pipes are high-alloy stainless steel pipes of the 25Cr-20Ni series. High-temperature-resistant steel pipes have good oxidation resistance and corrosion resistance. Because they contain a higher percentage of chromium and nickel, they have higher creep strength. , can continue to operate at high temperatures, with an operating temperature of 1200 ℃ and a continuous use temperature of 1150 ℃, and has good high temperature resistance.
0Cr25Ni20 is a brand of stainless steel produced in accordance with Chinese GB standards. 0Cr25Ni20 is equivalent to the American 310S stainless steel pipe. 310S contains 25% chromium and 20% nickel. Due to its high content of nickel (Ni) and chromium (Cr), it has good corrosion resistance, acid and alkali resistance, and high temperature resistance. High temperature resistant steel pipes are specially used for furnace components, nozzles, combustion chambers, etc., and carbon is added to austenitic stainless steel. After the content, the strength is improved due to its solid solution strengthening effect. The chemical composition characteristics of austenitic stainless steel are based on chromium and nickel with elements such as molybdenum, tungsten, niobium and titanium added. Since its structure is a face-centered cubic structure , thus having high strength and creep strength at high temperatures.
Chemical composition of high temperature resistant steel pipe (%): Ni nickel: 19.00-22.00 Cr chromium: 24.00-26.00 Si silicon <= 1.50 Mn manganese <= 2.00 C carbon <= 0.08 S sulfur <= 0.030 P phosphorus <= 0.035.
High temperature resistant steel pipe application range
High temperature resistant steel pipes are suitable for making various high temperature resistant furnace tubes, burner flame nozzles, flame nozzles, rotary kiln tubes, sintering furnace tubes, high temperature furnace tubes, electric furnace tubes, glass bead sintering furnace tubes, rotary kiln Unloading port, 1200 degree high temperature resistant furnace tube, 1300 degree high temperature resistant furnace tube, continuous use temperature 1150 ℃. Product application scope: exhaust pipes, heat treatment furnaces, heat exchangers, incinerators and other steel types that require heat resistance, high heat/high temperature contact parts.
