The pure magnesium, for metallurgical use, is in a loaf size and the minimum batch is 25 tons. On the market there are different qualities and degrees of purity: 99.9%, 99.95% and 99.98%.
There are several brands and minimum lots. The pieces are very variable.
Pure magnesium is used in many aluminum alloys to increase its tensile strength. It is also added in the preparation of alloys for the treatment of nodular cast iron.
Pure magnesium is always supplied with certificates of chemical analysis. Most of the world production is concentrated in Russia and China.