Luxembourg-registered steel group ArcelorMittal's issuance of equity and mandatory convertible bonds has improved its liquidity and reduced leverage. We are affirming our 'BB+/B' ratings on ArcelorMittal. We are assigning a 'B+' long-term rating to ArcelorMittal's $2.25 billion three-year mandatory convertible bonds. The outlook remains negative, reflecting that the credit ratios will remain below the level commensurate with the current rating in the next 12 months. PARIS (Standard&Poor's) Jan. 11, 2013--Standard&Poor's Ratings Services said today that it has affirmed its 'BB+' long-term and 'B' short-term corporate credit ratings on Luxembourg-registered steel group ArcelorMittal. The outlook remains negative. At the same time we assigned a 'B+' long-term issue rating to the $2.25 billion three-year mandatory convertible bonds (MCB)