High carbon steel used for example on Opinel knives. Carbon steel XC90 (known also as 1086 steel) is easy to sharpen and you can easily achieve very high sharpness of the edge. 1086 steel has a very low corrosion resistance. It rusts very easily, therefore it is necessary to pay attention to proper care and maintenance.

Steel composition: 0,8 - 0,93% Carbon, 0,3 - 0,65% Manganese,  traces of Phosphorus and Sulfur