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Primary Examiner: Sebastian, Leland A.
Assistant Examiner: Hunt, B.
Attorney:

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Title: Method for producing tool steel articles

Abstract: This invention relates to a tool steel consisting essentially of, in weight percent, carbon 1 to 1.4 or 2.5, chromium 4 to 6, vanadium 1 to 1.5 or 8, tungsten 7.5 to 13, molybdenum 3.5 to 7, cobalt 9 to 15, nitrogen at least about 0.03 and preferably 0.03 to 0.08, and the balance iron. The invention also relates to a tool steel compact of this steel produced by a powder-metallurgy technique also in accordance with this invention. The tool steel article is characterized by a combination of good cutting performance and machinability.

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Inventors: Steven, Gary (Pittsburgh, PA, US)

Application Number: 180412
Filing Date: 1971-09-14
Publication_date: 1976-02-03
Assignee: Crucible Inc. (Pittsburgh, PA)
Primary Class(es): 419/48 419/44, 419/57
Other Classes:
US Patent Ref:

3341325

Sep, 1967

Cloran

75/225.

Other Refs: Other References: Roberts et al., "Tool Steels," 3rd Ed., ASM, 1962, p. 719.