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Cu-Al bimetallic material is a new technical material, based on different industry needs,formed by advanced machining processing technique: Solid-Liquid machining processing technique to bond copper and aluminum in oxygen-free environment permanently and firmly, which decided the alloy and base material characteristic are better preserved.
link:https://www.ygmetal.com/clad-metals/copper-clad-aluminum/bimetal-plate-aluminum-copper-composite.html
Bimetal Plate Aluminum Copper Composite