Cold Rolled Steel Finish

Number 1 or matte dull finish.

Cold rolled steel finish.

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. One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar. Cold rolled steel improved surface finishes tighter tolerances april 24 2017 definition. One can easily recognize the difference in finish when comparing a cold finished bar to a hot rolled bar.

Cold rolled strip steel finishes are usually specified to one of the finishes below. A finish without luster produced by rolling on rolls roughened by mechanical or other means. Actual colors in finish may vary slightly from sample image shown. A hot rolled bar comes out of the mill with a rough abrasive discolored and dirty surface.

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. This finish is especially suitable for paint adhesion. It also aids in drawing by reducing the amount of contact and therefore the. Our blackened hot rolled finish is simple.

Choose from our selection of cold finished steel including low carbon steel sheets and bars multipurpose 4140 alloy steel bars and more. 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. 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. Cold rolled steel is defined as the group of steels which has been passed through a rolling mill below its recrystallization temperature.

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. 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. As such it is usually a bit more expensive. In stock and ready to ship.

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. If the cold rolled product was annealed it will be easier to work than hot rolled material.