Cold Rolled Sheet Steel Properties

Cold rolled steel is essentially hot rolled steel that has had further processing.

Cold rolled sheet steel properties.

Cold rolled is more expensive than hot rolled. To meet the various end use requirements cold rolled sheet products are metallurgically designed to provide specific attributes such as high formability deep drawability high strength high dent resistance good magnetic properties enamelability and paintability. Some of the main properties of cold formed steel are as follows. Cold rolled steel is rolled at room temperature below its recrystallization temperature which enables better control over finished product shape thickness dimensions and surface finish.

This process will produce steel with closer dimensional tolerances and a wider range of surface finishes. Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish. In general cold rolled steel sheet can hold tighter tolerances than hot rolled when machined or otherwise fabricated and provides a better overall surface finish. When a steel section is cold formed from flat sheet or strip the yield strength and to a lesser extent the ultimate strength are increased as a result of this cold working particularly in the bends of the section.

The rolls induce plastic deformation. Thus the yield strength of cold rolled steel is higher than that of hot rolled steel. As the working takes place in temperatures below the rescrystallisation temperature strain hardening occurs. Hot rolled steel is rolled or shaped at a high temperature while cold rolled steel is rolled at room temperature.

Therefore cold rolled steel is identifiable by an oily and smooth surface. The mechanical properties of the steel. The steel is processed further in cold reduction mills where the material is cooled at room temperature followed by annealing and or tempers rolling. Tight control over chemical composition hot rolling parameters amount of cold reduction annealing time and temperature and the amount of temper rolling allow the production of high quality cold rolled steel products to meet customer requirements.

When steel is formed by press braking or cold rolled forming there is a change in the mechanical properties of the material by virtue of the cold working of the metal. Cold rolled steel sheet is essentially hot rolled steel that has been further processed to increase its strength and strength to weight ratio. Cold rolled has sharper corners and more precise dimensions than hot rolled. Cold rolled commercial quality sheet or coil steel supplied for either exposed or unexposed applications where bending welding forming or moderate drawing is involved.

In general cold rolled has better mechanical properties than hot rolled. Alliance steel s cold rolled steel service capabilities include slitting shearing blanking leveling degreasing and brushing and metallurgical support. Crcq is available in coil sheet or strip formed with various gauge ranges widths and hardness.