Cold Rolled Steel Finish

Cold rolled strip steel finishes are usually specified to one of the finishes below.

Cold rolled steel finish. Actual colors in finish may vary slightly from sample image shown. Cold rolled steel is also up to 20 percent stronger than hot rolled steel making it ideal for parts that require minimal mechanical fluctuation under pressure. The surface finish tolerance straightness and consistency of cold rolled steel will always be superior to hot rolled steel. When the steel cools off it will shrink slightly thus giving less control on the size and shape of the finished product when compared to cold rolled.

Hot rolled products like hot rolled steel bars are used in the welding and construction trades to make railroad tracks and i beams for example. It also aids in drawing by reducing the amount of contact and therefore the. A hot rolled bar comes out of the mill produced at temperatures of 1600 f to 2200 f with a rough abrasive discolored and dirty surface. One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar.

As such it is usually a bit more expensive. Product with 2b finish is normally supplied in the annealed plus lightly cold rolled condition unless a tensile rolled harder and stronger product is specified. The finished material appears dark gray and has a smooth reflective surface that is resistant to corrosion thanks to a stable oxidation film on the surface of the finished steel. A finish without luster produced by rolling on rolls roughened by mechanical or other means.

Number 1 or matte dull finish. In stock and ready to ship. Bright annealed ba finish a smooth bright reflective finish typically produced by cold rolling followed by annealing in a protective atmosphere so as to prevent oxidation and. Choose from our selection of cold finished steel including low carbon steel sheets and bars multipurpose 4140 alloy steel bars and more.

Our blackened hot rolled finish is simple. We use hot rolled steel and clean the original mill scale of the steel to a blue black finish that has a clean durable classic industrial look. This is because the steel at the mill is finished at temperatures upwards of 1600 f to 2200 f and at these high temperatures an iron scale. If the cold rolled product was annealed it will be easier to work than hot rolled material.

Cold rolled steel is defined as the group of steels which has been passed through a rolling mill below its recrystallization temperature. One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar.