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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 11186886 B1

PDFFull Text
Date of Patent:
Nov. 30, 2021

Filed:

Apr. 25, 2016

Steel, product made of said steel, and manufacturing method thereof

Applicant:

Aperam, Luxembourg, LU;

Inventors:

Valerie Perrin Guerin, Imphy, FR;

Gilles Pinton, Imphy, FR;

Angeline Bordas, Imphy, FR;

Christian Vallade, Imphy, FR;

Assignee:

APERAM, Luxembourg, LU;

Attorney:

Nixon & Vanderhye

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
C21D 9/00 (2006.01); C22C 38/14 (2006.01); C22C 38/12 (2006.01); C22C 38/10 (2006.01); C22C 38/08 (2006.01); C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C21D 9/46 (2006.01); C21D 8/02 (2006.01); C21D 6/00 (2006.01); C21D 6/02 (2006.01); C21D 8/00 (2006.01); C22C 38/54 (2006.01); C22C 38/44 (2006.01); C22C 38/18 (2006.01); C22B 9/18 (2006.01); C22B 9/20 (2006.01); C21D 7/06 (2006.01); C22C 38/52 (2006.01); C22C 38/16 (2006.01); C22C 38/50 (2006.01); C22C 1/02 (2006.01); C21D 9/30 (2006.01); C22C 30/00 (2006.01); C22C 38/42 (2006.01); F16C 3/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/0068 (2013.01); C21D 6/001 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 6/02 (2013.01); C21D 7/06 (2013.01); C21D 8/005 (2013.01); C21D 8/021 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0247 (2013.01); C21D 8/0278 (2013.01); C21D 9/00 (2013.01); C21D 9/30 (2013.01); C21D 9/46 (2013.01); C22B 9/18 (2013.01); C22B 9/20 (2013.01); C22C 1/02 (2013.01); C22C 30/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/105 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/54 (2013.01); C21D 2211/004 (2013.01); C21D 2211/008 (2013.01); F16C 3/02 (2013.01);
Abstract

Disclosed is a steel composition including specified ranges of Ni; Mo; Co; Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C; Co+Mo; Ni+Co+Mo; and traces of Al; Ti; N; Si; Mn; C; S; P; B; H; O; Cr; Cu; W; Zr; Ca; Mg; Nb; V; and Ta in specified ranges; the remainder being iron and impurities. The inclusion population, as observed by image analysis over a polished surface measuring 650 mmif hot-formed or hot-rolled; and measuring 800 mmif cold-rolled, does not contain non-metallic inclusions of diameter>10 μm, and, in the case of a hot-rolled sheet, does not contain more than four non-metallic inclusions of diameter 5-10 μm over 100 mm, the observation being performed by image analysis over a polished surface measuring 650 mm.

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