What is another word for crucible steel?
Pronunciation: [kɹˈuːsəbə͡l stˈiːl] (IPA) 
Crucible steel, also known as blister steel or shear steel, is a high-quality steel made by melting iron and carbon in a crucible. It was invented in ancient India and later perfected by the Japanese and Europeans. Synonyms for crucible steel include shear steel, blister steel, cast steel, and wrought iron. Shear steel is made by repeatedly heating and hammering wrought iron and steel together to remove impurities and increase strength. Blister steel is made by heating and hammering iron and carbon together to create a blister-like texture. Cast steel is made by casting molten steel into a mold, while wrought iron is a low-carbon iron alloy that is malleable and ductile.
