, U10, Handmade knives. Hunting, fishing, outdoor, exclusive knives, axes.U10 steel has very good cutting characteristics and it is very popular in knife making. These steel knives are durable and they have good cutting abilities as well as they are easy to be sharpened. They are not resistant to corrosion, therefore, after the use they should be dried. The hardness of steel is 59-60 HRC. This type of steel is used for hunting, fishing and tourist knives.