SAO PAULO, Jan 28 (Reuters) - Brazil steelmakers will raise prices for steel used in auto manufacturing between 12% and 15% in February in line with rising steel prices worldwide, a source told Reuters on Thursday.

The steelmakers planning the price increase include Companhia Siderurgica Nacional, Usiminas and Gerdau. (Reporting by Alberto Alerigi Editing by Chris Reese)