Ceradyne, Inc. Promotes Bruce Lockhart to Corporate Vice President.

Business Editors

COSTA MESA, Calif.--(BUSINESS WIRE)--March 13, 2003

Ceradyne, Inc. (Nasdaq:CRDN) today announced the promotion of Bruce Lockhart, president of Ceradyne Thermo Materials, to the position of Vice President, Ceradyne, Inc.

Lockhart, who joined Ceradyne in September 2001 as president of Thermo Materials, Scottdale, Georgia, remains as president in charge of that division, which manufactures fused silica ceramics. His background of more than 17 years in industrial ceramics includes R & D, marketing, manufacturing, and operations management. A 1985 graduate of Clemson University with a Bachelor of Science degree in Ceramic Engineering, he earned a Clemson MBA degree in 1990. Prior to joining Ceradyne, Lockhart held various engineering and management positions at Thermal Ceramics Inc., an industrial ceramics company.

Joel Moskowitz, Ceradyne president and chief executive officer, commented: "We are pleased to promote Bruce to corporate vice president. With his technical expertise, organizational ability, and management skills, Bruce has improved Thermo Materials' operations and has also been involved in several new business developments. This division's activities in military products, crucibles for manufacturing photovoltaic (solar) cells, metallurgical tooling, and glass tempering are expected to play an important role in the Company's future growth."

Ceradyne develops, manufactures and markets advanced technical ceramics for defense, automotive, industrial, and consumer applications. Additional information about the Company can be found at the Company's Web site at www.ceradyne.com.

The presentation may contain forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those projected. The Company may use words such as "anticipates," "believes," "plans," "expects," "intends," "future," and similar expressions to identify forward-looking statements. Further risks and uncertainties are described in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2001, and in its Quarterly Report on Form 10-Q for the quarter ended September 30, 2002, as filed with the Securities and Exchange Commission.