Low ambient contamination

The contamination here means that unintended impurity elements are present and mixed into the metal. Since impurities that cause compounds are reduced in high-purity aluminum, it is possible to reduce contamination caused by the elution of the elements from the material. In addition, since the impurity elements are reduced, it is also possible to reduce contamination caused by the movement of elements from the place where aluminum and solids come into contact. In this way, high-purity aluminum can be said to be an excellent material in terms of suppressing contamination in the surrounding area.