Experimental Investigations Of Tensile Properties Of Ultra-High Strength Steel S1100QL At Room And Elevated Temperatures

Abstract

The aim of this paper was to present experimental study into the influence of elevated temperatures on mechanical properties of Ultra-High-Strength Steel (UHSS) S1100QL. This steel belongs to the group of structural steels and it is primary used for designing various types of lifts and cranes with the goal to decrease mass of the structures with simultaneous increase of load capacity. During the first part of testing tensile tests were conducted on room and several other elevated temperatures (100°C, 400°C and 700°C). Results showed that steel’s properties at 100°C are similar to properties at room temperature. Drastic changes in strength and other tensile properties occur at 400°C and 700°C. From obtained results can be seen that this steel could not be used at those elevated temperatures.