WORK-HARDENABLE REFRACTORY CARBIDE TOOL STEELS
United States Patent 3492101

Inventors:
Prill, Arnold L.
Dickson, John S.
Publication Date:
01/27/1970
Export Citation:
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Assignee:
CHROMALLOY AMERICAN CORP
Primary Class:
75/237
International Classes:
C22C29/06; E21B10/56; E21B10/58; E21B10/46; B21D33/00
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US Patent References:
3053706Heat treatable tool steel of high carbide content




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