UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Mark One)

For the fiscal year ended: June 30, 2012

For the transition period from ____________ to _____________

Commission File No. 000-23039

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Exchange Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ¨ No x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ¨ No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ¨ No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes o No x

As of December 31, 2011 (the last business day of the registrant’s most recently completed second fiscal quarter), the aggregate market value of the shares of the registrant’s common stock held by non-affiliates (based upon the closing sale price of such shares as reported on the NASDAQ Capital Market) was approximately $15.8 million. Shares of the registrant’s common stock held by each executive officer and director and each by each person who owns 10% or more of the outstanding common stock have been excluded from the calculation in that such persons may be deemed to be affiliates of the registrant. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

There were a total of 3,880,866 shares of the registrant’s common stock outstanding as of September 28, 2012.

DOCUMENTS INCORPORATED BY REFERENCE

None.

EXPLANATORY NOTE

China Precision Steel, Inc. (the “Registrant”) filed its Annual Report on Form 10-K for the fiscal year ended June 30, 2012 on October 15, 2012. The Registrant is filing this Amendment No. 1 on Form 10-K/A to furnish its Interactive Data Files (XBRL Exhibits) as Exhibit 101. The Registrant elected to take advantage of the 30-day grace period for filing its first XBRL documents with detailed tagging requirements, as permitted by Rule 405 of Regulation S-T.

Users of this data are advised that pursuant to Rule 405 of Regulation S-T, these interactive data files are deemed not filed or part of a registration statement or prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of section 18 of the Securities and Exchange Act of 1934, and otherwise are not subject to liability under those sections.

Investors should continue to rely on the originally filed version of the Form 10-K. No other changes have been made to the Form 10-K other than those described above. This Amendment No. 1 on Form 10-K/A does not reflect subsequent events occurring after the original filing date of the Form 10-K or, except as described above, modify or update any disclosures made in the Form 10-K.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

EXHIBIT INDEX