Abstract
Alloying principles for new high-strength cold-resistant steels for marine equipment with a yield strength of 500–800 MPa are developed. The technology is based on a lower amount of expensive alloying elements. The production technologies for that are shown. Optimum structure requirements on high-strength steels used for marine engineering are discussed. Hot plastic working schemes for industry with immediate quenching and posttempering that provide the formation of nanosized structural elements are described. The results of industrial testing of new high-strength steels and their comparison with the properties of the known hardened and tempered steels are represented.
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