1.2.10. Materials for locating and clamping elements.
The locating and clamping elements are generally made from steel. The elements wich come in contact with the workpiece or are subjected to wear should be hardened and wherever necessary, the working face should be ground. For dowel pins and handles, silver steel is generally used. For complicated shapes and when exceptional wear is liable to occur, good quality case- hardened steel, tool steel or a high tensile steel may be used.