Different Types Of Steel Piping Materials and Valves Used In Power Plant

Boiler is one of the three main engines of thermal power units. Its superheater and reheater are the components that withstand the worst working environment. They face the test of high temperature, high pressure, steam oxidation and flue gas corrosion. They are the components with the highest material requirements. The following conditions:

1) Mechanical properties at room temperature: high tensile strength and yield strength, good impact toughness;

2) High temperature performance: excellent high temperature durable strength, creep resistance, good high temperature microstructure stability;

3) Chemical properties: good high temperature oxidation resistance, flue gas corrosion resistance;

4) Process performance: excellent thermal processing performance, welding performance and thermal bending performance;

5) Physical properties: low thermal expansion coefficient and good thermal conductivity;

6) Good economy: choose cost-effective materials.

Austenitic stainless steel has high Cr and Ni content, high creep strength, good microstructure stability, excellent resistance to flue gas corrosion and steam oxidation, and good weldability. It is widely used in boiler heating parts where corrosion and steam oxidation have high requirements. Tubes for superheaters and reheaters are also generally made of austenitic stainless steel