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<div>Nowadays, high-strength steels (HS) and ultra-high-strength steels (UHS) are increasingly used, especially in welded structures. These types of steels are mainly used as material for heavily loaded structures such as bridges, cranes, and excavators, as well as for pressure vessels, various types of vehicles, ships, drilling structures, etc. operating at room temperature or below. Since the requirements for the above structures are specific, the use of high-strength and ultra-high-strength steels requires research into the factors affecting their weldability. According to the usual welding rules HS steels and UHS steels can be welded by all conventional welding methods. The S960QL steel studied in this paper falls into the group of high strength quenched and tempered fine-grained grain steels. This work presents results showing the influence of the welding gap on some mechanical properties of submerged arc weldments of the high strength steel S960QL.</div>

Keywords: High strength steel, S960QL, mechanical properties, submerged arc weldments

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