Steel is a variant of iron to which traces of carbon have been added. Steel alloys may also have other elements added, such as chromium or nickel, to produce specific properties. One method of preparing steel for the market is called cold rolling.
--- Manufacturing
Cold rolled steel is made by passing the metal through multiple rollers after it has cooled from initial production. As the steel passes through the rollers, its thickness is gradually reduced.
--- Types
There are usually four types of cold rolled steel: commercial steel, drawn steel, extra deep drawn steel, and extra deep drawn steel. Drawn steel is more ductile.
--- Advantages
Cold rolled steel tends to have a lower carbon content than hot rolled steel, making it more durable. They can also be rolled to more specific sizes since hot rolled steels do not shrink.
--- Strength
According to KeytoMetal.com, cold rolled steel can also be treated to increase structural strength. However, SteelStrip.co.uk reports that increasing strength and hardness reduces ductility.
--- Surface treatment and appearance
Cold rolled steel is usually rolled to have a matte appearance. They can also be painted, if desired, by removing lubricants that are often used prior to transportation.
