Wire cutting, originally developed for the processing of natural stone, is increasingly used for the machining of reinforced concrete and metallic structures. In this field of application the diamond wire sawing tools are subjected to a higher-than-average wear. Furthermore the metallic bonding of the cutting beads is not suitable for machining metallic structures, because of a missing self-sharpening effect. Within this paper, conventional wire sawing tools are investigated in pure steel structures. These tools are supposed to be suitable for the cutting process in accordance to their tool concept. The manufacturing process and the grain sizes have an influence to the tool performance. From these investigations requirements for a new tool concept will be derived.