LYCOS RETRIEVER 
Magnesium: Metals
built 677 days ago
Magnesium is the ideal material for applications where weight saving is a priority, having the lowest density of all structural metals. Almost as light in weight as plastic, magnesium has the advantage of greater strength and rigidity along with inherent EMI shielding, durability, heat-dissipation and full recyclability.
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Magnesium is the eighth most abundant element in the earth's crust although not found in it's elemental form. It is a Group 2 element (Group IIA in older labelling schemes). Group 2 elements are called alkaline earth metals.
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Magnesium is the lightest of the commonly used metals. Its versatility and abundance make it one of the most popular metals, and variations of magnesium alloys are used in almost every major industry because it is strong, easily machined, and stable. Magnesium alloys are ... impact and dent resistant, and they have the capacity for damping and low inertia, which makes them effective in high-speed applications.
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Magnesium metal burns with a very bright light. The picture above shows the colour arising from adding magnesium powder to a burning mixture of potassium chlorate and sucrose. Do not attempt this reaction unless are a professionally qualified chemist and you have carried out a legally satisfactory hazard assessment.
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Magnesium is the lightest structural metal available a combination of low density and good mechanical strength, resulting in a high strength-to-weight ratio. Magnesium components are generally used in applications from room temperature to about 200 degrees F. Certain magnesium alloys can be used for short durations to about 700 degrees F.
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Magnesium and other alkali earth metals are responsible for water hardness. Water containing large amounts of alkali earth ions is called hard water, and water containing low amounts of these ions is called soft water.
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