If the query fails to produce results, the government will study filing a case against the US.
To compete globally, Brazilian metals, materials and mining companies will have to look to increased innovation, according to an industry group.
An updated fleet renewal program is under consideration at the ministry of development, industry and trade (MDIC).
The new benchmark will be used in all of Ferbasa's contracts starting October 1.
The announced merger is credit negative and will put pressure on Baosteel's ratings, Moody's said in its initial assessment of the deal.