What is the state known for steel?

The state known for steel is Pennsylvania. The state is home to the city of Pittsburgh, which is often called the "Steel City" due to its historic significance in the steel industry. Pittsburgh was a major center for steel production in the United States during the late 19th and early 20th centuries, and it is still home to several major steel companies. The steel industry in Pennsylvania played a crucial role in the industrial development of the United States, and it continues to be an important part of the state's economy.