FINANCIAL SERVICES

* Banc One Corp.’s First USA credit card unit bought Chevy Chase Bank’s credit card business, making it the No. 2 U.S. credit card company. Terms were not disclosed. Columbus, Ohio-based Banc One said First USA bought $4.9 billion in card loans, will hire Chevy Chase’s 1,300 credit card employees and will take over the bank’s credit card facilities in Frederick, Md.