Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Patent
1990-04-18
1991-10-22
Roy, Upendra
Alloys or metallic compositions
Ferrous
Nine percent or more chromium containing
420 71, 420 91, 420109, C22C 3806
Patent
active
050593897
ABSTRACT:
A steel product, such as a medium carbon die block, having good impact, ductility, transverse and physical properties, and lower than normal sulphur contents yet having machinability equal or better than higher sulphur levels characterized by a lower than ordinary level of stringer-type inclusions, other inclusions being mainly of the non-deleterious globular type.
REFERENCES:
patent: 3929423 (1975-12-01), Finkl
patent: 4210444 (1980-07-01), Bellot
patent: 4318739 (1982-03-01), Lehman
patent: 4431445 (1984-02-01), Furusawa et al.
patent: 4468249 (1984-08-01), Lehman
patent: 4842816 (1989-06-01), Miyasaka et al.
patent: 4915900 (1990-04-01), Nomura et al.
Finkl Charles W.
Lehman Albert L.
A. Finkl & Sons Co.
Roy Upendra
Staples James G.
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