Boiler steel application

Heat-resistant steel for boilers in the boiler industry is used to produce boiler bodies and vessels, as well as tanks to transport liquefied gases, petroleum products and other liquid and gaseous goods; and to manufacture fittings, valves and other auxiliary elements for pressure equipment.

Boiler steel classification and properties

 Heat-resistant steel for boilers and pressure vessels is produced and delivered in compliance with the requirements of international and national standards, including:

• European standards EN 10028 (in seven parts), BS 1501, NF A36-215:1997
• US standards ASME SA202/SA202M, ASTM A203/A203M, ASME SA203/SA203M, ASME SA285/SA285M, ASTM A285/A285M, ASME SA299/SA299M, ASTM A299/A299M, ASME SA387/SA387M, ASTM A387/A387M, ASME SA515/SA515M, ASTM A515/A515M, ASME SA516/SA516M, ASTM A516/A516M, ASTM A517/A517M, ASME SA537/SA537M, ASTM A537/A537M, ASME SA662/SA662M, ASTM A662/A662M
• CIS standards GOST 5520, TS 14-1-4853-90, TS 14-1-5065-2006

Depending on the standard for technical specifications and end use, heat-resistant steels for boilers and rolled steel for pressure vessels are supplied in thicknesses of 4-150 mm and widths of up to 4,800 mm, in normalised, thermomechanically hardened or hardened condition.

The key requirements for boiler plates include weldability, high strength and toughness, formability, crack resistance (also at negative temperatures), uniform distribution of structural components and mechanical properties through the thickness, width and length of the plate. An increase in aggressiveness of transported substances often requires that the steel for pressure vessels is delivered with guaranteed resistance to hydrogen sulphide media. Wide and long plates are used during the manufacture of large tanks to reduce the number of welds.