Be2Cu

Be₂Cu is an intermetallic compound combining beryllium and copper, representing a hard and brittle metallic phase that forms in the Cu-Be system. While not widely used in primary structural applications due to beryllium's toxicity hazards and material brittleness, this intermetallic has been studied for specialized aerospace and electronic applications where its high stiffness and low density could offer weight savings. Industrial adoption remains limited; the material is primarily of research interest for understanding phase behavior in copper-beryllium alloys and for niche applications in precision instruments where beryllium's unique properties justify handling complexity.