HSS
High speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance. And people also call it air hardening steel. Which can hardening when it cooling in the air during the quenching. There are two kinds of materials as its main part.
Such as metal carbide and steel substrate. The metal carbide including tungsten carbide, molybdenum carbide and vanadium carbide. They will make material get better strength and wear resistance. And the steel substrate, which is distributed at the carbide around. It will influence material properties. Make it get better toughness and the ability to absorb shock and prevent chipping. The red hardness of high-speed steel is high. And has great wear resistance, good process performance. Even the strength and toughness are best during all types of steel. So it is used to make the complex blade and metal cutting tools with good impact resistant ability. And it also is great material for cold worked mold base, high-temperature springs and etc.