Industrial metals are on track for the worst quarter since the 2008 financial crisis as prices are pummeled by recession worries. Copper, the great economic bellwether, has ricocheted into a bear market from a record four months ago, while tin just tumbled 21% in its worst week since a 1980s crisis froze London trading for four years.

There’s a fight brewing in the lithium market, after a controversial forecast from Goldman Sachs Group Inc. analysts set off a backlash among some of the industry’s most prominent experts.

For the first time in more than a decade, six of the world’s most vital industrial metals are flashing a rare synchronized warning over tight supply, as logistical turmoil and strong demand spark anxiety among buyers.