High Strength Steel in the Scope Of Structural Applications

by Stefan Heroin

Publisher - KoRoH GmbH, Karlsruhe, Germany

Category - Engineering & IT

High strength steels with yield strengths up to 700 MPa are widely used in onshore applications, mechanical engineering, mobile cranes, amusement rides and all kind of machinery. But also, for offshore structures as Jack-up rigs high strength steels are used since many years, whereby the main applications are legs, spud cans, racks and pinions. In all cases the advantages can be seen in thinner sections, less weight and less welding costs. In case of fatigue a lower wall-thickness reduction factor can be considered when thinner sections are used. Under these aspects steel manufacturers are developing better production lines and steel qualities resulting in heavy plates and seamless hollow sections, also with varying thickness over the length, and in high strength materials with high toughness and good weldability. In the following a few aspects and some assistance are offered how and where to find the right material and which standards should be considered. This paper will present some aspects of the use of high strength steels (HSS) in construction under static and fatigue load.

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