Silicon 99 is ladle refined silicon of minimum 99% purity. The material has a wide range of uses, and over the years several qualities have been tailored to fit the need of very different processes. Elkem has the ability to produce Silicon 99 with low content of phosphorus.
Silicon 97 is ladle refined silicon of minimum 97% purity. The material is produced in large industrial scale in a tight tolerance band. Silicon 97 is refined and this results in a very high yield when used as alloying element in aluminium or in other metallurgical processes.