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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 11091825 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

Apr. 10, 2018

Prehardened steel material, mold, and mold component

Applicant:

Daido Steel Co., Ltd., Nagoya, JP;

Inventor:

Masamichi Kawano, Nagoya, JP;

Assignee:

DAIDO STEEL CO., LTD., Nagoya, JP;

Attorney:

McGinn I.P. Law Group, PLLC.

Primary Examiner:

Nicholas A Wang

Assistant Examiner:

Jiangtian Xu

Int. Cl.
CPC ...
C22C 38/60 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/52 (2006.01); C22C 38/58 (2006.01); C21D 6/02 (2006.01); C21D 1/25 (2006.01); C21D 9/00 (2006.01); C21D 6/00 (2006.01); C22C 38/46 (2006.01); C22C 38/00 (2006.01); C21D 1/18 (2006.01); C22C 38/04 (2006.01); C22C 38/54 (2006.01);
U.S. Cl.
CPC ...
C22C 38/60 (2013.01); C21D 1/18 (2013.01); C21D 1/25 (2013.01); C21D 6/004 (2013.01); C21D 6/02 (2013.01); C21D 9/0068 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/52 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C21D 2211/001 (2013.01); C21D 2211/002 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01);
Abstract

Provided is a prehardened steel material containing: 0.05≤C≤0.25 mass %, 0.01≤Si≤1.00 mass %, 0.40≤Mn≤1.80 mass %, 0.0002≤S≤0.3000 mass %, 0.30≤Cu≤1.80 mass %, 2.00≤Ni≤3.90 mass %, 0.05≤Cr≤3.20 mass %, 0.05≤Mo≤0.80 mass %, and 0.30≤Al≤1.50 mass %, with a balance being Fe and unavoidable impurities, in which the prehardened steel material has: a cross-sectional size of 350 mm or more in width and 350 mm or more in height, a hardness of 34 to 43 HRC, an average value of prior austenite grain size being 85 μm or less, and an average value of impact value being 18 J/cmor higher.

Find Patent Forward Citations

Kawano, Masamichi. (2021). Prehardened steel material, mold, and mold component (U.S. Patent No. 11091825). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11091825

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

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