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Steel grades AISI 304L (domestic analogue 03X18H11) and AISI 316L (domestic analogue 03X16H15M3) are based on AISI 304 and AISI 316 alloys and differ from them by a reduced carbon content (0.03% instead of 0.08%), as well as an increased nickel content (1% more than the original grades) and other components. This gives them enhanced anti-corrosion properties and resistance to high temperatures.

Steel grades AISI 304L and AISI 316L successfully resists intercrystalline corrosion, which affects austenitic alloys with a high content of alloying additives. The danger of this type of destruction increases at high temperatures accompanying the metal welding process. These alloys are also resistant to other types of corrosion (pitting and crevice). They can work with nitric acid media at high temperatures, while the original AISI 304 and AISI 316 alloys do not withstand such conditions. AISI 316 steel, created on the basis of AISI 304 and distinguished from it by the presence of an additive of molybdenum (2.5%), has increased resistance to corrosion, heat and aggressive media. AISI 304L and AISI 316L steel grades are used to produce equipment for the food, pharmaceutical, chemical and petrochemical industries, pipes and boilers, high-quality welded structures operating under high loads, for example, pumps. Our company has manufactured pump groups made of these materials specially for the needs of the client, which have successfully proven themselves during operation.