MATERIAL FACT Publicly-held Company

COMPANHIA SIDERÚRGICA NACIONAL
Corporate Taxpayer's ID (CNPJ/MF): 33.042.730/0001-04
COMPANHIA SIDERÚRGICA NACIONAL ("Company"), pursuant to article 157, paragraph 4, of Law 6,404/76 and Instruction 358/02 of the Brazilian Securities and Exchange Commission ("CVM"), hereby announces the approval of the ninth (9th) issue of simple, non-convertible, unsecured debentures in a single series ("Issue" and "Debentures") of the Company for public distribution with restricted placement efforts, pursuant to CVM Instruction 476, of January 16, 2009 ("Restricted Offering"). The
Issue will comprise 10,000 Debentures, with nominal unit value of R$10,000.00, totaling R$100,000,000.00, with the last installment maturing on March 30, 2022. The Debentures will be registered for distribution on the primary market on the MDA - Asset Distribution Module and for trading on the secondary market on CETIP 21
Module - Securities, both administered and operated by CETIP S.A. - Organized Markets ("CETIP"), respecting the ninety-day blackout period, as of each subscription or acquisition by investors, in accordance with article 13 of CVM Instruction 476/09, with the distribution and trading being settled and the Debentures being held on electronic custody at CETIP.
In addition, the Company announces that the net proceeds from the Issue and the Restricted Offering will be allocated to the early redemption of the 2nd (second) issue of Company's commercial promissory notes.
This Material Fact is disclosed by the Company exclusively to comply with applicable rules and legislation, and it has exclusively informative purposes and shall not be interpreted or considered, for all legal effects, as Debenture sale or disclosure material.
São Paulo, June 30, 2015.

Companhia Siderúrgica Nacional

Gustavo Henrique Santos de Sousa
Controllership, Taxes and Investor Relations Officer

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