VG-10 is a high carbon stainless steel manufactured by Takefu Special Steel in Fukui prefecture Japan. The steel contains 1.00% of Carbon and it has good edge retention and excellent corrosion resistance. It is specially designed for high-quality knife blades used in Japanese made high-end kitchen knives.

VG10 steel is also widely used by a numbers of sporting knife manufacturing companies, such as Spyderco, Fallkniven and SOG etc...
SPG2 (SG-2 or R2)
SPG2 (Super Gold 2) is a powder-made stainless steel provided by Takefu Special Steel in Fukui-Pref, Japan.
The steel contains 1.40 Carbon and 14.00% of Chromium is known for excellent wear resistance and corrosion resistance. SPG2 is mostly used for Japanese made high end kitchen knives, it is also known as R-2 steel in the kitchen knife industry. In many cases, SPG2 is used as a clad steel with two layers of a stainless steel due to its high cost.




A high carbon tool steel which is mostly used for making metallic molds or blanking dies. The steel contains about 1.5% of carbon and 12% of chromium that gives it slightly better corrosion resistance than other high carbon tool steels. The steel offers good wear resistance and excellent edge holding ability.

VG-1 stainless steel is also manufactured by Takefu Special Steel in Fukui prefecture Japan. The steel contains 0.95-1.05% of Carbon and 14.0% of Chromium. It has good edge retention and corrosion resistance. The steel is used widely in the kitchen knife industry, but is not so popular outside of Japan.
Aogami-2 (Blue Steel #2)

Aogami-2 high carbon steel is made by Hitachi Metals Ltd in Shimane-Prefecture, one of top metal products manufactures in Japan. It contains 1.10 % of Carbon and 0.35% of Chromium and 1.25% of Tungsten. The steel is made by adding Chromium and Tungsten to Shirogami steel (refined carbon steel) that makes the material more durable (increasing wear resistance) and provides corrosion resistance. The knives made by this steel is a good choice for first carbon steel kitchen knife.