Steel Classification System in Korea
Korea is a nation well known for its steel production and technology, and it has a unique system of steel classification. Korean steel is classified according to composition, microstructure, physical characteristics, and the intended use of the steel. This classification system is based on the Korean Steel Standard Classification System (KSSCS), which has been in use since 1986.
The first step in classifying Korean steel is to identify its composition, which is indicated by the first letter of the code. “J” is used to designate hot rolled carbon steel. “H” is used to distinguish cold rolled carbon steel, while “K” denotes alloy steels, such as those containing chromium and molybdenum. The second letter of the code then indicates its microstructure, which is either ferrite or martensite. Ferrite microstructure will be indicated by an “F” and martensite by an “M”.
The third letter of the code indicates the steel’s physical characteristics, such as mechanical properties and formability. An “S” indicates that the steel is strong, an “E” denotes an extra strength or high strength steel, and an “FC” indicates a formable or free cut steel. The last letter of the code specifies the intended use of the steel. An “A” indicates that the steel is most suitable for cold forming, a “B” that it is best suited for welding, and a “C” that it is best used for casting.
In addition to the KSSCS, there are also separate steel classification systems used by other countries, and oftentimes, the Korean steel code will differ from the codes used elsewhere. In these cases, independent steel distributors and distributors affiliated with steel mills often use the KSSCS in order to identify clearly what type of steel they are dealing with.
The KSSCS has helped to make the process of ordering and transporting steel much easier and more efficient. It is easy to read and understand, and through its use, anyone working in the steel industry can quickly understand the type of steel being dealt with. This has helped to save time, improve safety, and increase the efficiency of steel production in Korea.
