Ceradyne, Inc. Raises 2011 Guidance

COSTA MESA, CA, Mar 09 (MARKET WIRE) --
Ceradyne, Inc. (NASDAQ: CRDN) raises its 2011 guidance.

Ceradyne, Inc. management is adjusting its 2011 guidance to a range of
$2.35 per fully diluted share to approximately $2.70 per fully diluted
share, and sales from $505 million to $560 million.

This guidance is increased from prior guidance of $1.50 per fully diluted
share to approximately $1.90 per fully diluted share, and sales from $470
million to $540 million on January 10, 2011 and reiterated on February
24, 2011.

Joel P. Moskowitz, Ceradyne, Inc. Chairman, CEO and President, commented:
"We are comfortable in revising our 2011 guidance based on several
factors. First, we are experiencing increasing gross margins. We believe
this is due to higher volume efficiencies, an improved sales mix, as well
as firmer pricing in our industrial and commercial markets. Secondly, the
recent $56.6 million ESAPI award and several potential additional armor
opportunities increase the probability of a substantial increase in
military business compared to 2010. We are also encouraged by the
preliminary ballistic results the military is achieving on our Enhanced
Combat Helmet (ECH) first article testing. Finally, the projected
increased industrial ceramic business in Europe and strong demand for our
high purity fused silica ceramic solar crucible lead us to project
continuing positive results throughout 2011."

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.

Jerrold J. Pellizzon
Chief Financial Officer
(714) 549-0421

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

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