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The Rockwell Hardness Scale

 

The evaluation of hairdressing scissors' quality is based on the Rockwell hardness scale, which is a measure of hardness and durability.

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Regardless of the presence of steel additives, the quality of hairdressing scissors relies on the Rockwell score.

 

You will come across these additives in product descriptions:

 

CARBON content in finished scissor steel typically ranges from 0.95% to 1.2%, serving as the key hardening agent. A higher carbon content significantly enhances the hardness of the steel.

 

VANADIUM is an expensive element sometimes found in high-quality scissors. It enhances the hardness, durability and corrosion resistance of the steel.

 

CHROMIUM plays a crucial role in enhancing heat resistance during forging and finishing processes. Furthermore, it improves hardness of steel and the corrosion resistance in oxidizing environments.

 

MANGANESE has the capability to enhance the tensile strength of scissor blades, thus ensuring a prolonged sharpness of the edge. Additionally, this element is essential for removing oxygen from steel and enhancing its ability to harden.

 

MOLYBDENUM is a carbide known for its ability to enhance hardness and strength. Additionally, it significantly improves resistance to corrosion.

 

COBALT is a highly effective alloy that significantly improves the properties of other elements in complex steels. With its ability to reduce weight, enhance corrosion resistance and improve edge retention, cobalt is widely recognised in the industry.

 

NICKEL is commonly used as an additive in steel to enhance hardness, corrosion resistance, durability and ductility. The dosage of nickel plays a crucial role in determining these properties.

 

TUNGSTEN is a highly valuable carbide renowned for its exceptional resistance to water and solvents. With its remarkable hardness and durability, it possesses the highest tensile strength among all pure metals.

 

TITANIUM is a highly scarce and expensive material. As a result, only the most premium scissors are infused with a small amount in their steel composition. This addition boosts strength and prolongs sharpness.

 

Cheap titanium scissors are colour-coated with Titanium Nitride, purely for decoration.

 

Titanium Nitride is an affordable scissor coating method achieved through vapor deposition. It involves introducing titanium chemicals and nitrogen gas into a vacuum chamber, resulting in the bonding of titanium nitride. This coating produces a gold appearance that can be customised with different chemicals for various colours.