çeli
çeli is a Turkish word meaning "steel". It refers to an alloy of iron and carbon, with carbon content typically between 0.2% and 2.1% by weight. Other alloying elements may be present to impart specific properties. Steel is known for its strength, hardness, and durability, making it a widely used material in construction, manufacturing, and various industries. The properties of steel can be significantly altered through heat treatment processes like quenching and tempering, as well as by adding different elements such as chromium, nickel, or manganese. Stainless steel, for example, contains a minimum of 10.5% chromium, which provides excellent corrosion resistance. The production of steel is a complex industrial process that usually involves smelting iron ore and then refining it to remove impurities and control the carbon content. Its versatility and cost-effectiveness have made steel one of the most important materials in the modern world.