ATI Issues Expiration Of HSR Review Period For Acquisition Of Ladish

Allegheny Technologies Incorporated (NYSE: ATI) announced today that the review period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 has expired for its previously announced acquisition of Ladish Co., Inc. (NASDAQ: LDSH).

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Allegheny Technologies Inc| ATI Ladish Company Inc.| LDSH On November 17, 2010, ATI and Ladish announced that they had entered into a definitive merger agreement whereby ATI will acquire Ladish for an aggregate fully distributed equity value of approximately $778 million.

The expiration of the HSR waiting period satisfies one of the closing conditions set forth in the merger agreement. The transaction is also subject to approval by Ladish shareholders and other closing conditions, and is expected to be completed in the first quarter of 2011.

Allegheny Technologies Incorporated is one of the largest and most diversified specialty metals producers in the world with revenues of $3.8 billion for the twelve months ending September 30, 2010. ATI has approximately 8,900 full-time employees world-wide who use innovative technologies to offer global markets a wide range of specialty metals solutions. Our major markets are aerospace and defense, oil and gas/chemical process industry, electrical energy, medical, automotive, food equipment and appliance, machine and cutting tools, and construction and mining. Our products include titanium and titanium alloys, nickel-based alloys and superalloys, grain-oriented electrical steel, stainless and specialty steels, zirconium, hafnium, and niobium, tungsten materials, and forgings and castings. The Allegheny Technologies website is www.ATImetals.com.

Ladish Co., Inc. is a leading producer of highly engineered, technically advanced metal components for the jet engine, aerospace and general industrial markets. Ladish is headquartered in Cudahy, WI with operations in Wisconsin, California, Connecticut, Oregon, and Poland. Ladish common stock trades on Nasdaq under the symbol LDSH.

Important Information for Investors and Security Holders

This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. ATI has filed with the Securities and Exchange Commission (the SEC ) a registration statement on Form S-4 that includes a preliminary proxy statement of Ladish that also constitutes a preliminary prospectus of ATI. The registration statement has not yet been declared effective by the SEC. A definitive proxy statement/prospectus will be mailed to shareholders of Ladish.