USX sold its chemicals division for $526 million.

Faced with a takeover bid and locked in the longest steel strike in the nation’s history, the Pittsburgh-based company sold the division to Aristech Chemical Corp. Aristech will continue the division’s production and marketing of chemicals and polymers, USX Chairman David Roderick said. “This move completes another step in our ongoing restructuring program,” said Roderick, who announced in October plans to sell the chemicals division.