ASTM A387 boiler vessel plate is a chromium-molybdenum alloy steel plate for welded boilers and high-temperature pressure vessels.ASTM A387 boiler vessel plate is categorized into grades 5, 9, 11, 12, 22, and 91 according to the alloying elements it contains.
In addition to 21L, 22L, 91 and 911 grade, each grade of ASTM A387 boiler vessel plate according to its heat treatment and there are two tensile strength categories: class 1 and class 2. ASTM A387 boiler vessel plate thickness is limited only by the ability of the chemical composition to meet the requirements of the specified mechanical properties.
The molybdenum content of ASTM A387 boiler vessel plate improves its tensile strength at elevated temperatures and provides high resistance to oxidation and corrosion through increased lattice strain.ASTM A387 boiler vessel plate is ideal for use in heat-resistant pressure vessels and sour gas environments.
