RARE EARTH ELEMENT-FREE ALUMINUM ALLOY FOR 3D PRINTING

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A rare earth element-free aluminum alloy for 3D printing, comprising the following components in percentage by weight : Mn : 2.5%-4.5%, Mg : 1.5%-9.5%, and the balance of Al and impurity elements; or Mn : 4.5%-6.0% and Mg : 1.5%-7.5%. The alloy can achieve excellent strength or plasticity, and compared with Al-Mg-Sc-Zr aluminum alloys, rare earth resources can be saved and the raw material cost can be greatly reduced.