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Hydronalium is a family of aluminium-magnesium alloys. It is an alloy predominantly of aluminium, with between 1%-12% of magnesium as the primary alloying ingredient. It also includes a secondary addition of manganese, usually between 0.4%-1%. The Hydronalium alloys originated in Germany in the 1930s〔 and are best known, at least by that name, in Eastern Europe. They were widely used for shipbuilding in Poland. There are a large number of alloys within this family, one standard reference listing over twenty.〔 == Applications == The alloy family is noted for its resistance to seawater corrosion.〔 As such it is used in sheet form for boatbuilding and light shipbuilding. As castings it is used for marine fittings. The reliable strength of some grades is sufficient for aerospace use and so they are used for wetted components of seaplane aircraft, such as floats and propellers, where marine corrosion resistance is also needed. Some variants of the alloy are ductile enough to be drawn into wire. This, combined with their resistance to corrosion by salty sweat, has led to an application for violin strings as an alternative to silver. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hydronalium」の詳細全文を読む スポンサード リンク
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