A387 Pressure Vessel Grade Steel Plate

A387 steel is a common alloy steel material that complies with the A387 standard of ASTM (American Society for Testing and Materials). This standard covers different types and grades of alloy steel plate used in the manufacture of pressure vessels and boilers.

A387 steel has good high temperature resistance, pressure resistance and corrosion resistance, and is suitable for working environments under high temperature and high pressure conditions. It is commonly used in the manufacture of pressure vessels and boilers in petrochemicals, chemical engineering, power plants and other industrial areas.

The ASTM A387 standard defines different grades of A387 steel, each grade having specific chemical composition and mechanical property requirements. Common A387 classes include:

A387 Grade 11: Contains 1.25% chromium and 0.5% molybdenum, commonly used in the manufacture of pressure vessels at high temperatures.
A387 Grade 12: Contains 1% chromium and 0.5% molybdenum, with good heat resistance and corrosion resistance.
A387 Grade 22: Contains 2.25% chromium and 1% molybdenum, suitable for working environments under high temperature and high pressure conditions.
A387 Grade 91: Containing 9% chromium and 1% molybdenum, it is a high alloy steel with excellent high temperature resistance.