Ceradyne, Inc. to Release Second-Quarter Financial Results on Tuesday, July 26, 2011

COSTA MESA, CA, Jul 13 (MARKET WIRE) --
Ceradyne, Inc. (NASDAQ: CRDN) will release financial results for its
second quarter ended June 30, 2011 before the market open on Tuesday,
July 26, 2011. Management will also conduct a conference call to review
the Company's financial results and the outlook for 2011.

Any investor or interested individual can listen to the teleconference,
which is scheduled to begin at 8 a.m. PDT (11 a.m. EDT) on July 26. To
participate in the teleconference, please call toll-free 888-417-8516 (or
719-325-2359 for international callers) approximately 10 minutes prior to
the above start time and provide Passcode 1694045.

One may also listen to the teleconference live via the Internet at
www.ceradyne.com or www.earnings.com. For those unable to attend, these
web sites will host an archive of the call.

A telephone playback will be available for 48 hours beginning at noon PDT
on July 26. The playback can be accessed by calling 888-203-1112 (or
719-457-0820 for international callers) and providing Passcode 1694045.

Ceradyne develops, manufactures and markets advanced technical ceramic
products and components for defense, industrial, 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 www.ceradyne.com.

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

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

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