What are major magnesium applications?
As the metal magnesium is the third most commonly used structural metal, following steel and aluminum. Magnesium compounds, primarily magnesium oxide, are used mainly as refractory material in furnace linings for producing iron, steel, glass, cement and nonferrous metals. According to low weight, good mechanical and electrical properties, magnesium is widely used for manufacturing of mobile phones, laptop computers, cameras, and other electronic components. Also the use of magnesium alloys in automotive, chemistry, defence, aerospace, fuel economy and many others. Source Magnesium .
