Silumin

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Silumin is a series of lightweight, high-strength aluminium alloys with silicon content between 4% and 22%. Among the advantages of silumin is its high resistance to corrosion, making it useful in humid environments. The addition of silicon to aluminium also makes it more fluid when liquid, which together with its low cost (both component elements are relatively cheap to extract), makes it a very good casting alloy and a fresher metal.