The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1978
Filed:
Apr. 22, 1977
Applicant:
Inventor:
Toshio Okuno, Yasugi, JP;
Assignee:
Hitachi Metals, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
7512 / ; 7512 / ; 7512 / ;
Abstract
The present invention relates to a tool steel for warm and hot working which consists essentially of, by weight, 0.50 - 1.00% of C, up to 1.50% of Si, up to 1.50% of Mn, 0.70 - 1.50% of Ni, 3.00 - 4.50% of Cr, 1.3 - 5.0% of W, 4.2 - 9.0% of Mo, 1.30 - 3.00% of V, 0.9 - 6.0% of Co, and the balance essentially Fe and impurities and 0.15 + 0.2 V .ltoreq. C .ltoreq. 0.42 + 0.2 V. This tool steel is especially high in warm and hot strengths and abrasion resistance and has excellent toughness and hardenability.