Copper, widely considered a building block for the energy transition, has reached record highs this year. But analysts warn it faces some headwinds.

Copper, widely considered a building block for the energy transition, has reached record highs this year. But analysts warn it faces some headwinds.

Record copper prices are accelerating manufacturers' shift toward aluminium, driven by lower costs and lighter weight. Automakers are expanding aluminium use as supply shortages,…