Industry Snapshot

Ferrous slags are valuable co-products of iron and steelmaking. Blast Furnace Slag (BFS) is composed of the non-metallic components removed from iron ore during processing in a blast furnace. It consists mostly of silica, alumina, and lime. Steel Furnace Slag (SFS) is composed of lime flux and impurities removed from iron during processing in a steel furnace. Typically SFS is primarily composed of lime, iron oxide and silica. Both BFS and SFS have unique physical and chemical properties that make them particularly well suited to a variety of uses in construction and civil engineering projects..

The American steel industry provides
essential products for other U.S.
manufacturing sectors.

Industry Facts

There are 143 facilities in the United States.

There are 35 states that have steel manufacturing facilities.

For general information on our industry:

American Iron and Steel Institute
www.steel.org

Steel Manufacturers Association
www.steelnet.org

According to our annual industry survey:

• There are 20 – 25 million metric tons of potentially reusable by product material generated annually.
• 85-90 percent of this material is reused / recycled annually.

Did you know?

SFS demonstrates exceptional frictional and skid resistant properties in asphalt applications.