The steels, which are processed by one or more molds at the room temperature, are called "Cold Drawing Steel" or "Transmission Steel". It is aimed to increase the flow and tensile strength of the material without the need of heat treatment by cold drawing process. When it is necessary to improve the mechanical properties of the hot rolled sheet by thinning, rolling at room temperature is applied instead of pulling. Such materials are referred to as cold rolled steel.
In a cold drawn or rolled material, it is possible to use the material surface without processing if a sensitive surface is not required. Another advantage of cold drawing is that it increases workability as it provides easy breaking of the chips. Softening annealing should be applied to the material in case of very high rates of crushing.
Grades used as transmission steels include St37-2, St44-2, St52-3, SAE 1008, SAE 1010, SAE 1018, etc. Such qualities can be mentioned. Cold drawn conditions of these materials are commercially referred to as "transmission steel". Transmission steels have high welding ability thanks to their low carbon content. Due to this situation, welding process applied machinery, automotive parts, shafts, etc. It is preferred because it makes it easier to use in many parts such as. In addition, the process time can be extended as it does not perform at the level of the automat steel in chip breaking. The reason for preference is mostly because it is economical compared to automat steels.
Transmission steels find use in many sectors such as construction, machinery manufacturing, automotive, white goods and even the defense industry.