Ceradyne, Inc. Acquires Interest in Japanese-Based Yamanaka EP Corporation

COSTA MESA, CA and KYOTO, JAPAN, Mar 10 (MARKET WIRE)
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Ceradyne, Inc. (NASDAQ: CRDN) and Yamanaka EP Corporation (Kyoto, Japan)
jointly announced that Ceradyne, Inc. has acquired a minority interest in
Yamanaka EP Corporation for an undisclosed amount. Yamanaka EP
Corporation, a privately owned company based in Kyoto, Japan, processes
advanced technical materials in its modern processing facility in Shiga,
Japan, and markets these materials in Japan, Asia, the United States, and
Europe primarily for nuclear power plant, solar, optical fiber, and
semiconductor applications. Ceradyne, Inc.'s wholly owned subsidiary,
Ceradyne Boron Products, supplies nuclear power plant and semiconductor
materials to Yamanaka. The companies plan to change the name of Yamanaka
EP Corporation to Yamanaka Ceradyne, Inc. There will be a Ceradyne, Inc.
representative on the Yamanaka Ceradyne, Inc. Board of Directors.

Mr. Takao Danno, President of Yamanaka, commented: "We are very pleased
to have our long-term supplier, Ceradyne Boron Products, as an integral
part of the Yamanaka family. We anticipate continued growth in the
Japanese and other Asian nuclear power plant markets over the next
decade."

Mr. Michael Kraft, Vice President of Ceradyne Nuclear and Semiconductor
Business Units, stated: "Our strategy in Asia is to have a regional 'on
the ground' presence. We have achieved this in China and now our formal
partnership with Yamanaka EP Corporation ensures a close professional
presence in Japan and the rest of Asia. Yamanaka EP Corporation has been
working with Ceradyne's Boron Products subsidiary and its predecessor in
Quapaw, Oklahoma, for over 15 years, and we are looking forward to
expanding this relationship into other Ceradyne products."

About Ceradyne, Inc.
Ceradyne develops, manufactures, and markets
advanced technical ceramic products and components for defense,
industrial, energy, automotive/diesel, and commercial applications. In
many high performance applications, products made of advanced technical
ceramics meet specifications that similar products made of metals,
plastics or traditional ceramics cannot achieve. Advanced technical
ceramics can withstand extremely high temperatures, combine hardness with
light weight, are highly resistant to corrosion and wear, and often have
excellent electrical capabilities, special electronic properties and low
friction characteristics. Additional information about the Company can be
found at http://www.ceradyne.com.

Forward-Looking Statements
Except for the historical information
contained herein, this press release contains forward-looking statements
regarding future events and the future performance of Ceradyne that
involve risks and uncertainties that could cause actual results to differ
materially from those projected. Words such as "anticipates," "believes,"
"plans," "expects," "intends," "future," and similar expressions are
intended to identify forward-looking statements. These risks and
uncertainties are described in the Company's Annual Report on Form 10-K
for the fiscal year ended December 31, 2010 and its Quarterly Reports on
Form 10-Q as filed with the U.S. Securities and Exchange Commission.

Michael Kraft
Vice President, Nuclear & Semiconductor Business Units
(714) 549-0421, x8236

Phil Bourdillon/Gene Heller
Silverman Heller Associates
(310) 208-2550

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