Charakteristika a vlastnosti konstrukčních ocelí

Abstract

Steel production passed complicated development from period of small-scale production as far as today´s form of industrial mass production. By perfection and development of industrial processes a rise of wide assortment and steel types were reached and therefore these types were divided to the grades of steel according to carbon content and further to the groups according to alloying elements. Alloying elements are added to steels for properties improvement and thereby for expanded posibilities of steel application. The most useal steel types are those of structual steels. To obtain knowledge about chemical composition properties and application, three the most common structural steel types, i.e. S235, S355 and C45 were chosen and compared mutually. At present, structual steels are very asked material. Thanks the properties and large application possibilities is the mentioned steel type a basic material for building industry, engineering, automotive industry, agriculture and other branches of industry.