Why is steel a superior material to cast iron?
Cast iron is a material that can gradually wear away over the years, resulting in thinner walls, and ultimately leaks. Cast iron boilers are made in sections, with gaskets between each section. These gaskets can fail, resulting in the entire section being replaced, When that occurs, the entire boiler has to be filled with water and tested under high pressure, at the jobsite, which is very labor intensive. A leak in a steel boiler can simply be welded.
