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Types & Grades of Steel

Get top-quality steel for your project! We offer a wide variety of options including Carbon, Alloy, Stainless, and Tool steel. Shop online now and get fast delivery.

Shop by Steel Category

Steel is an extremely diverse metal. There are many different grades, types, and processes for steel that change its properties. Essentially there are four main types of steel. The four types can be remembered with the acronym CAST: Carbon Steel, Alloy Steel, Stainless Steel, Tool Steel. Additionally, we have to production finishes that we organize by as well: Hot Roll and Cold Roll.

Choosing The Right Steel

Carbon steel is made up of a combination of iron and carbon. It is strong, durable, and commonly used in construction and manufacturing because of its ability to withstand high temperatures and pressure. Carbon steel is often used in things like buildings, bridges, and tools. There are different ranges of Carbon Steel, from Low Carbon (Mild Steel), to Ultra-High Carbon. Most of our inventory is Mild Steel or Medium Carbon steel, though we do have some High Carbon grades as well.

Popular Alloys Include: 1018, 1045, A36, & A513

“I'm a custom knife maker and use Online Metals very frequently for my steels. They're quick to ship and always send me precision ground and very flat bars of metal.” - Ryan