Cobalt-steel is a term used to describe a specific type of material that is commonly used in the manufacture of cutting tools and other industrial equipment. It is a type of high-speed steel that contains a significant amount of cobalt, which gives it exceptional heat-resistant properties. Synonyms for cobalt-steel include high-speed steel, tool steel, alloy steel, and cobalt alloy. These terms are often used interchangeably to refer to the same type of material, which is highly valued in the production of high-quality tools and machinery. Other related terms include tungsten carbide and titanium nitride, which are also commonly used in the production of cutting tools and other industrial equipment.