A slim double-bevel Yanagi-type knife for sashimi. Shorter ones (6–13.5 cm) make an excellent substitute for petty knives.
Blue (Aogami) #2 (Hitachi Metals Ltd.) is made by adding Chromium and Tungsten / Wolfram to White Steel #2. This results in increased toughness and the production of hard carbide molecules, which improve edge retention. Many knife users have noted that while Blue Steel #2 is very similar to White Steel #2 in edge sharpness, it has slightly superior edge retention.