鐵 is a chemical element with the symbol Fe and atomic number 26. It is a metal that is known for its strength and durability, making it a key material in construction and manufacturing. 鐵 is abundant in the Earth's crust and is primarily obtained from ores such as 鐵礦石. In addition to its industrial uses, 鐵 plays a vital role in biology. It is an essential component of 血紅蛋白, the protein in red blood cells that carries oxygen throughout the body. A deficiency in 鐵 can lead to anemia, highlighting its importance in human health.