Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

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 Rule 358 of the Brazilian Securities and Exchange Commission (“CVM”) of January 3, 2002, hereby announces to its shareholders and the market that its Board of Directors has approved the second (2^nd) issuance of promissory notes (“Promissory Notes”) of the Company for public distribution with restricted placement efforts (“Issuance”), pursuant to CVM Rule 134, of November 1, 1990, CVM Rule 155 of August 7, 1991 and according to the provisions of CVM Rule 476 of January 16, 2009.

The Issuance comprised 50 Promissory Notes with unit value of R$2 million, totaling R$100 million, fully subscribed and paid up on March 30, 2015.

The net proceeds raised by the Company through this Issue, after deducting the scheduled fees and expenses, will be wholly used for the amortization of a portion of the principal of the 1^st series of the Company's 6th debenture issue.

.

São Paulo, March 31, 2015.

Companhia Siderúrgica Nacional

David Moise Salama

Investor Relations Executive Officer

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.