SA-335 P92 Steel Pipe

SA-335 P92 is a kind of high-temperature alloy seamless steel pipe conforming to American Standard (ASTM, ASME), which is mainly used in pipeline system 2 in high temperature environment. The following is a comprehensive introduction about the steel pipe made of this material 2:

I. Basic definitions and standards
Standard system: It follows the specifications of american society of mechanical engineers (ASTM) and Petroleum Institute (ASME) and belongs to martensitic heat-resistant steel series.

Main application: It is specially designed for high temperature environment above 600℃, and is commonly used in main steam pipeline, reheat steam pipeline and ultra-supercritical unit 2 in thermal power plants.

Second, the material composition and performance
Alloy composition: The main alloy elements include Cr (Cr) 9%, Mo (Mo) 0.5%, W (W) 1.8%, B (B), etc., and contain trace amounts of N (nitrogen) and Si (silicon).

Key improvement: By reducing the molybdenum content to 0.5% and increasing the tungsten content to 1.8%, the molybdenum equivalent (Mo+0.5W) is increased to about 1.5%, thus optimizing the high-temperature strength and corrosion resistance 2.

Performance characteristics: it has high strength, good hardenability and creep resistance, and can run stably in the environment above 600℃ for a long time.

Third, typical application scenarios
Thermal power generation: main steam pipeline and reheat steam pipeline 2;

Petrochemical industry: high temperature process pipeline;

Nuclear energy: some high-temperature process equipment.

Four, other related parameters (taking Baosteel products as an example)
Specification range: wall thickness 416-730mm, outer diameter 18-630mm3;;

Production process: hot rolling process is adopted, and the surface of the pipe is black (uncoated);

Connection mode: welding connection.

V. Market supply
At present, many domestic steel pipe manufacturers (such as Hengyang Hongling, Baosteel, etc.) have produced them, and the product specifications cover the diameter of 10mm-630mm to meet different engineering needs.

To sum up, SA-335 P92 steel pipe has become the core material in the field of modern industrial high-temperature pipelines due to its excellent high-temperature performance and corrosion resistance.