"SBQ" is generally used in the USA, while in Europe the term
"engineering steels" is more common. Both terms refer to steel
types as well as to bar products, and as they are often
associated with the steel grades, they refer to billet and slab
as well as bar.
The superior mechanical properties and defect-free surface
of SBQ make it indispensable in the manufacture of components
– often safety-critical components – that are
in motion. Applications include gears, shafts, axles, drive
trains and suspensions for automobiles, off-highway vehicles
and industrial capital equipment, plus some components for
aerospace and oil drilling.
Corus Engineering Steels (CES) claims to produce
Europe’s most comprehensive size and specification
range of engineering steels, from carbon and carbon manganese
steels, below the definition of SBQ, right through to stainless
steels and specialist alloys for high temperature use.
Republic Engineered Products, based in Ohio, USA, is North