which Material is used to make the blades for Hanzo scissors?
scissors for hairdresser
The blades of the hairdressing scissors by Hattori Hanzo are made of steel SUS Japanese Hitachi 440C. This type of steel is able to achieve, after the various heat treatments at temperatures below the maximum level of strength, hardness and strength than any other alloy of stainless steel in the world.
Its high carbon content is responsible for these characteristics, which make it particularly suitable for 440C applications like those from hairdressing scissors, scalpel in the operating room and equipment for dentists.
Other grades of steel 440A and 440B have a lower carbon content (0.60 - 0.75% and 0.75 - 0.95%, respectively), these have lower hardness.
Stainless steels are optimized for high hardness at the expense of other properties such as flexibility. The fabrication is done with methods that allow poor weldability and usually also allow a final heat treatment hardener.
The main properties of hairdressing scissors by Hanzo
Corrosion resistance
Good resistance to weather, all 'water, soap and acid permanent.
Heat
It is not recommended for use at temperatures above those recommended, due to the reduction of mechanical properties from overheating.
Heat Treatment of hairdressing scissors by Hanzo
Annealing
Full Annealing at - 850-900 ° C, with a slow decrease in furnace at 600 ° C and then lowering progreeivo colder air.
Induration
at temperatures above di1010-1065 ° C, followed by a rapid cooling during the process of tempering air and oil.
Cooling to temperatures below zero
The method is also called a heat-shock treatment during processing, allowing forged hairdressing scissors from work without distortion.
