What bs 22b15 in ral?

BS 22B15 refers to a British Standard specification for a type of alloy steel, specifically categorized under the 22B series. It typically indicates a steel that has been alloyed with elements such as chromium and molybdenum to enhance its strength and resistance to wear and corrosion. The "15" signifies a specific composition or treatment within that series. This steel is used in various engineering applications where high strength and durability are required.