Imagine a world without steel. There would be no high-rise buildings, no welded fences, no planes and many other necessary inventions would not exist. Its hardness and tensile strength make it an ideal material for many applications.
As a welder, you can create any sort of structure by attaching steel beams to each other. As a restaurant owner, stainless steel appliances make it easy to keep the kitchen sterile. Use steel to structure your projects.