Cold Rolled Steel Finish

As such it is usually a bit more expensive.

Cold rolled steel finish. It also aids in drawing by reducing the amount of contact and therefore the. In stock and ready to ship. 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. Cold rolled steel is defined as the group of steels which has been passed through a rolling mill below its recrystallization temperature.

This finish is especially suitable for paint adhesion. 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. Cold rolled steel improved surface finishes tighter tolerances april 24 2017 definition. 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.

Actual colors in finish may vary slightly from sample image shown. One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar. The surface finish tolerance straightness and consistency of cold rolled steel will always be superior to hot rolled steel. Number 1 or matte dull finish.

A finish without luster produced by rolling on rolls roughened by mechanical or other means. If the cold rolled product was annealed it will be easier to work than hot rolled material. 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. 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.

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. Our blackened hot rolled finish is simple. Cold rolled strip steel finishes are usually specified to one of the finishes below. 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.

One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar. 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.