METHOD FOR PRODUCING HIGH-STRENGTH STEEL PRODUCT AND STEEL PRODUCT

摘要

The object of the invention is a method for producing a high- strength galvanized steel product, the composition of which in percentages by weight comprises C: 0.04-0.10% Si: =0.03% Mn: 0.3-1.2% Nb: 0.015-0.10% N: =0.01% P: =0.02% S: =0.02% Al: 0.01-0.08% V: =0.08%, the remaining being iron, unavoidable impurities or residual contents. The object of the invention is also a high-strength product with the above mentioned composition. In accordance with the invention it has surprisingly been established that by direct quenching of steel with the mentioned composition there is obtained a high-strength steel with excellent hot-dip galvanization properties.