Duplex Steel Pump Castings for Industrial Use

In fields such as boilers, heat exchangers, chemical equipment and aerospace, 1Cr18Ni9Ti (equivalent to 321) has become a core material for the manufacturing of key structures due to its characteristics of "resistance to intergranular corrosion + wide temperature range adaptability". When the boiler is in operation, the temperature inside the furnace often reaches 600-800℃, and the water vapor contains trace amounts of corrosive impurities. The high-temperature resistance and corrosion resistance of 1Cr18Ni9Ti can prevent the furnace tubes from leaking due to high-temperature oxidation and corrosion, ensuring the long-term safe operation of the boiler. The heat exchanger needs to operate under the alternating action of cold and hot media, with a large temperature fluctuation range. The stable mechanical properties of this material within the range of -180 ℃ to 870℃ can cope with the stress impact caused by frequent temperature changes. Meanwhile, its excellent welding performance ensu…