At first glance it looks like a typical butterfly knife, but in fact it is a classic folding knife with a blade that resembles an oriental saber in its design.
AISI 420 (American Iron and Steel Institute) martensitic stainless steel abundant in 0.15% carbon, including min. 12% chromium, which offers high hardenability within 54-56 HRC and strength, ductility, machinability and excellent corrosion resistance. High carbon content creates chromium carbide compounds for wear resistance and edge retention after hardening. Due to its high hardness, the steel is suitable for manufacturing cutting tools, knife blades and medical instruments.
Elaboration: the company Sharg®