What steel is black steel?

Black steel is a type of steel that is not galvanized and is characterized by a dark-colored iron oxide coating on its surface. This oxide layer forms naturally during the manufacturing process and gives the steel its distinctive black appearance. Black steel is primarily used in pipes and other applications where galvanization is not necessary.

Key characteristics of black steel include:

1.Iron Oxide Coating: The black color comes from the scaly, dark-colored iron oxide coating that forms on the surface.

2.Non-Galvanized: Unlike galvanized steel, black steel has not been coated with a layer of zinc to prevent corrosion.

3.Applications: Commonly used in applications where the steel will be hidden or covered, such as in piping for transporting water and gas.

Both black steel and carbon steel are primarily composed of iron and carbon, but black steel is defined by its unique surface coating rather than its carbon content.