What is P91 steel pipe equivalent to

P91 seamless steel pipe, also known as A335/SA335 P91 alloy steel pipe, is implemented in accordance with ASME SA335 and ASTMA335. This steel pipe was jointly developed by the American Society of Mechanical Engineers and the American Society for Testing and Materials, and is designed for ferritic alloys in high temperature environments. Its chemical composition is strictly controlled, including the precise content of elements such as carbon, manganese, silicon, phosphorus, sulfur, and the addition of key alloying elements such as chromium, molybdenum, vanadium, niobium, nitrogen, aluminum and nickel. In addition, the steel pipe also has excellent physical properties, with a tensile strength of more than 585 and a yield strength of more than 415. Its product specifications are flexible and diverse, with an outer diameter ranging from 21.3mm to 762mm and a wall thickness ranging from 3.0mm to 140mm. In terms of production methods, the steel pipe adopts hot rolling and forging processes, and the delivery state is heat treated to ensure the stability of product quality and performance.

What is P91 steel pipe equivalent to?