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black steel is a form of non-galvanized steel. the name “black steel” comes due to the appearance of the steel; it has a dark color on the surface of the steel due to iron oxide coating. this steel is important in applications where galvanized steel is not required.
black steel pipe's strength makes it ideal for transporting water and gas in rural and urban areas and for conduits that protect electrical wiring and for delivering high pressure steam and air. the oil and petroleum industries use black steel pipe for moving large quantities of oil through remote areas. this is beneficial, since black steel pipe requires very little maintenance. these pipes can prevent fires better than galvanized pipes. other uses for black steel pipes include gas distribution inside and outside homes, water wells and sewage systems. black steel pipes are never used for transporting potable water.
black iron pipe is actually made of a low-grade "mild steel" compound. this gives it much better corrosion resistance than traditional cast iron piping. there are few standards that all black iron pipes adhere to. however, they are all made to handle natural and propane gas, which usually stay below 60psi. the standards that black iron pipe must conform to guarantee a pressure rating of at least 150psi, if installed properly.
what is the difference between carbon steel and black steel?
carbon steel vs black steel | |
carbon steel is a form of steel containing carbon as a major constituent. | black steel is non-galvanized and has dark-coloured iron oxide coating on the surface. |
carbon content | |
has carbon content up to 2.1% by weight. | contains no carbon. |
hardness | |
the hardness of carbon steel depends on the carbon content. | the black steel has high strength and hardness. |
galvanization | |
requires galvanization because this steel is susceptible to corrosion. | is a non-galvanized steel. |
