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The 391-type hypereutectic aluminum-silicon alloys are hypereutectic alloys designed for applications where excellent wear resistance is needed. They are similar to the 390 family of alloys, except for a low copper content to improve castability and corrosion resistance. This datasheet provides information on key alloy metallurgy and processing effects on mechanical properties of separately cast test bars of these alloys.

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2019. "391.0, A391.0, and B391.0: Al-Si Hypereutectic Casting Alloys", Properties and Selection of Aluminum Alloys, Kevin Anderson, John Weritz, J. Gilbert Kaufman

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