What is SK4 Steel?

Yoshihiro Japanese SK4 Steel Knife

SK4 steel is not stainless steel because it contains very low amounts of chromium in its composition (0.30%), it is thus highly susceptible to rusting and corrosion. SK4 is also known to contain high impurities like sulfur and phosphorus that negatively impacts its performance. Most knife users skip knives made from this steel because of … Read more

Is SK5 steel good Knife steel?

Sk5 steel is a low-end, modern Japanese Carbon steel. It is considered an equivalent to the 1080 steel from America. The name is derived from Steel Kuogu (SK), which means steel tool, and the number “5” represents the impurity levels. There are other SK steels in the line up including SK4 steel. SK5 steel is … Read more