A387 grade 22 alloy steel pressure vessel plates

A387 Grade 22 is a type of alloy steel pressure vessel plate that is commonly used in high-temperature service applications. It conforms to the ASTM A387/A387M standard specification, which covers chromium-molybdenum alloy steel plates for elevated temperature service.

The "Grade 22" designation indicates that this steel has a specified minimum yield strength of 310 MPa (45,000 psi) and a minimum tensile strength of 515-690 MPa (75,000-100,000 psi). It contains chromium and molybdenum as key alloying elements, which provide enhanced corrosion resistance and high-temperature strength.

These pressure vessel plates are manufactured using a combination of hot rolling and controlled cooling processes. The hot rolling process involves heating the steel above its recrystallization temperature and passing it through rollers to achieve the desired thickness. Subsequent controlled cooling helps in obtaining the desired microstructure and mechanical properties.

A387 Grade 22 alloy steel pressure vessel plates are widely used in industries such as petrochemical, oil and gas, power generation, and chemical processing. They excel in withstanding high temperatures and high-pressure environments.

These plates can be further processed, including cutting, bending, and welding, to meet specific project requirements. A387 Grade 22 is selected for its excellent combination of strength, toughness, and corrosion resistance, making it suitable for demanding applications in pressure vessels and boilers.