It can also be found under the names Shiro-Ko 2 and Shiro-ni-ko. Its composition is similar to Shirogami 1 steel, only the carbon content differs. It is a high-carbon steel with the highest level of purity. It has a very simple chemical composition, does not contain a lot of carbides, but a lot of elemental carbon. High cleanliness and simple composition translates into extremely easy sharpening, thanks to which the blade can be made to have a mirror effect and reduce the sticking of the cut products to the knife surface. However, this steel can be hardened to very high hardness, thanks to its high hardness and abrasion resistance it can stay sharp for a long time. Note, like all carbon steels, it can rust, so it's worth spending time and attention on its maintenance - cleaning and oiling. Covering the knife with a patina prevents corrosion.
Composition:
- Carbon: 1,05-1,15%
- Manganese: 0,20-0,30%
- Silicon: 0,10-0,20%
- Phosphorus: 0,025%
- Sulfur: 0,004%