Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Reexamination Certificate
2003-11-04
2008-08-05
King, Roy (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
C075S242000, C051S309000, C175S336000, C175S374000, C175S425000, C175S428000
Reexamination Certificate
active
07407525
ABSTRACT:
Fracture and wear resistant cutting elements are provided. Examples include a cutting element formed of a wear resistant material having a binder composition and a coarse grain size such that the portion of the cutting element formed of the wear resistant material has a fracture toughness of at least about 18 ksi(in)0.5and a wear number of at least about 1.8. In a particular example, the wear resistant material has a fracture toughness of at least about 20 ksi(in)0.5. A down hole cutting tool incorporating such cutting elements is also provided.
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Alsandor Y. Renee
King Roy
Mai Ngoclan T
Smith International Inc.
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