News Release Details

Boston, MA -- (July 27, 2004) -- Cabot Supermetals, a division of Cabot Corporation (NYSE:CBT), announced today that it has reached an agreement with EPCOS AG, (Munich, Germany), to amend its current contract for the supply of capacitor grade tantalum powders, and to extend it through 2009.

Carol Flack, Vice President and General Manager, Supermetals, Cabot, said, "We are pleased to continue our relationship with EPCOS, one of the leading passive component manufacturers in the electronics industry. The amended contract will benefit both parties for the next several years, and ensure a reliable, high-quality source of tantalum powder for the manufacture of tantalum capacitors and the products in which they are used."

About Cabot Supermetals

Cabot Supermetals is a leader in the technology and production of tantalum for the electronics, aerospace, defense, and chemical processing industries.

Cabot Supermetals is ISO 9001 certified with manufacturing operations located in Boyertown, Pennsylvania, Columbus, Ohio, and Aizu Wakamatsu, Japan.

Founded in 1882, Cabot Corporation is a global specialty and materials company and is headquartered in Boston, Massachusetts, USA. Cabot's major products are carbon black, fumed silica, inkjet colorants, capacitor materials, and cesium formate fluids for oil drilling. Cabot has approximately 4,400 employees in 45 manufacturing plants located in over 20 countries around the world.