Rolled carbon steel is compressed into sheets, strips, rods or bars through hot or cold rolling. Hot rolling makes the metal more flexible and ductile, while cold rolling produces harder steel. Hot rolled steel is used for load-bearing structures, while cold rolled steel is used for consumer products.
Rolled carbon steel is a metal alloy that has been passed between two rolls to compress the metal into sheet, strip, rod or rod. This metalworking process can be applied to hot or cold metal. Hot rolling works the metal while it is at a high enough temperature to allow the metal to deform and recrystallize, while cold rolling works the metal while it is at room temperature.
Carbon steel is a metal alloy that is a blend of earth-mined iron and carbon. Although carbon steel is not the only iron-based metal alloy, it is the most widely used in manufacturing. To transform carbon steel stock into a form that can be used to build other products, steel mills can use a type of metalworking called rolling.
The rolling passes the metal through the center of a pair of revolving cylinders. The pressure from the rollers compresses the carbon steel material into more manageable shapes, such as flat sheets, strips, bars or rods. Processing carbon steel stock in this way makes it easier to sort, transport, store, and use for its intended purpose.
Steel mills can process rolled carbon steel by hot or cold rolling of steel. These labels give a clear indication of the distinction between the two types of lamination. Hot rolling passes the carbon steel through the rolls while the metal is hot and malleable, while cold rolling passes the carbon steel through the rolls while it is at room temperature or any temperature below the recrystallization point of the metal.
The important distinction between the two processes lies in the hardness of the resulting steel. Recrystallization prevents the steel from work hardening, so hot rolled carbon steel is not as hard or brittle as cold rolled steel. Processing the metal material while hot results in a product that is more flexible or ductile and has higher tensile strength. Hot rolled carbon steel is often formed into plates and used to build load-bearing structures that require a steel with some flexibility.
Cold rolled carbon steel is used for a variety of consumer related purposes. Steel is less ductile and because it is not subject to heat which can distort measurements until the product has cooled, cold steel can be measured accurately before being worked through the rolls. This type of rolled carbon steel tends to be more expensive and is used to build products such as automobiles, aircraft, and appliances.
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