M Castle

A. M. Castle & Co., founded in 1890 by Alfred Martin Castle in Chicago, is a global distributor of specialty metals and provider of supply chain services. The company primarily serves manufacturers of durable equipment across various sectors, including aerospace, oil and gas, heavy machinery, and transportation. With over 130 years of experience, A. M. Castle has established a strong presence in the U.S. with warehouses in key cities like San Francisco, Los Angeles, and Seattle. The company specializes in the distribution of high-performance alloys, stainless steel, carbon steel, and aluminum. It offers supply chain solutions that include inventory management, precision processing, and logistics support tailored to industrial customers. A. M. Castle also has a historical background in manufacturing structural steel components, although its current focus is on distribution. Now branded as Castle Metals, the company continues to innovate in material science and supply chain efficiency.