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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.:

US 9777355 B1

PDFFull Text
Date of Patent:
Oct. 03, 2017

Filed:

Sep. 19, 2013

Process for producing precipitation strengthening martensitic steel

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Jun Sato, Shimane, JP;

Tomonori Ueno, Shimane, JP;

Eiji Shimohira, Shimane, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Rankin, Hill & Clark LLP

Primary Examiner:

Deborah Yee

Int. Cl.
CPC ...
C21D 6/02 (2006.01); C22C 38/50 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/44 (2006.01); C21D 6/00 (2006.01);
U.S. Cl.
CPC ...
C22C 38/50 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 6/02 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/44 (2013.01); C21D 2211/001 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01);
Abstract

There are provided a precipitation strengthening type martensitic steel having both a tensile strength of a 1500 MPa class and a high Charpy absorption energy of 30 J or higher, and a manufacturing process thereof. The precipitation strengthening type martensitic steel includes, in terms of mass %, 0.05% or less of C, 0.2% or less of Si, 0.4% or less of Mn, 7.5 to 11.0% of Ni, 10.5 to 13.5% of Cr, 1.75 to 2.5% of Mo, 0.9 to 2.0% of Al, less than 0.1% of Ti, and a remainder of Fe and impurities, and contains 0.1 to 6.0% of austenite in terms of a volume fraction.

Find Patent Forward Citations

Sato, Jun. (2017). Process for producing precipitation strengthening martensitic steel (U.S. Patent No. 9777355). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9777355

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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