Palladium surged past $US1,600 for the first time overnight, in a seven-session rally, on expectations that strained supplies of the autocatalyst metal could worsen, while platinum soared 3 per cent.

Palladium surged past $US1,600 for the first time overnight, in a seven-session rally, on expectations that strained supplies of the autocatalyst metal could worsen, while platinum soared 3 per cent.