IRONORE/ Iron ore behemoths BHP BHP.AX and Rio Tinto RIO.AX added 1.5% and 2%, respectively. Sept 30 (Reuters) - Australian shares were set for a third weekly loss on Friday and the worst month in three, tracking a broad global selloff, as recession fears sapped stocks after the U.S. Federal Reserve failed to provide any clues on tempering its hawkish stance. US/ Back home, the Australian central bank is likely to hike interest rate by another 50 basis points in October in its most aggressive tightening cycle since 1990s to curb red-hot inflation, according to a Reuters Poll.