One of the most widely used types of steel sheets is hot-rolled steel sheet (commonly referred to as black sheet in the market). This type of sheet is informally known as “black sheet” due to its dull, non-reflective surface appearance, which results from the formation of mill scale during the hot-rolling process. Its typical surface color is matte gray.

Hot-rolled steel sheet (commonly known as black sheet) is produced through the hot rolling process and should not be confused with hot-dip galvanized steel.
This type of steel is typically manufactured from grades such as ASTM A36 and ASTM A1011. During production, steel slabs are heated in a reheating furnace to temperatures of approximately 1,200–1,280°C.
In the next stage, the heated material passes through a series of rollers where the rolling process reduces its thickness to the required dimensions. During this stage, descaling is performed to remove surface scale (iron oxide) formed at high temperatures.
Finally, after passing through finishing stands and a run-out cooling table, the steel strip is coiled and formed into hot-rolled steel coils.

Applications of Hot-Rolled Steel Sheet (Black Sheet)

Hot-rolled steel sheet (black sheet) is used in various industries. Some of its most common applications include the following:

automotive body structure

automotive floor pan steel shee

Welded pipes

Types of structural steel sections

Tanker fabrication

ship construction