Title of Invention	“HOT-WORKING STEEL EXCELLENT IN MACHINABILITY AND IMPACT VALUE”
Abstract	Disclosed is a hot-worked steel material having excellent machinability and an excellent impact value. Specifically disclosed is a hot-worked steel material which comprises the following components (by mass): C: 0.06-0.85%; Si: 0.01-1.5%; Mn: 0.05-2.0%; P: 0.005-0.2%; S: 0.001-0.35%; Al: 0.06-1.0%; and N: 0.016% or less, which meets a requirement represented by the formula: AlxNx10<sup>5</sup> ≤ 96, which further comprises Fe and unavoidable impurities as the remainder, and in which the total volume of AlN particles each having an equivalent circular diameter exceeding 200 nm makes up 20% or less of the total volume of all of AlN particlespresent in the steel material.

Title of Invention

“HOT-WORKING STEEL EXCELLENT IN MACHINABILITY AND IMPACT VALUE”

Abstract

Disclosed is a hot-worked steel material having excellent machinability and an excellent impact value. Specifically disclosed is a hot-worked steel material which comprises the following components (by mass): C: 0.06-0.85%; Si: 0.01-1.5%; Mn: 0.05-2.0%; P: 0.005-0.2%; S: 0.001-0.35%; Al: 0.06-1.0%; and N: 0.016% or less, which meets a requirement represented by the formula: AlxNx10<sup>5</sup> ≤ 96, which further comprises Fe and unavoidable impurities as the remainder, and in which the total volume of AlN particles each having an equivalent circular diameter exceeding 200 nm makes up 20% or less of the total volume of all of AlN particlespresent in the steel material.

Full Text	see the attachment

Documents:

http://ipindiaonline.gov.in/patentsearch/GrantedSearch/viewdoc.aspx?id=fSl8kk/lO7UoIRqM9nJmAg==&loc=+mN2fYxnTC4l0fUd8W4CAA==

« Previous Patent

Next Patent »

Patent Number

278107

Indian Patent Application Number

9715/DELNP/2008

PG Journal Number

52/2016

Publication Date

16-Dec-2016

Grant Date

14-Dec-2016

Date of Filing

21-Nov-2008

Name of Patentee

NIPPON STEEL & SUMITOMO METAL CORPORATION

Applicant Address

6-1, MARUNOUCHI 2-CHOME, CHIYODA-KU, TOKYO 100-8071, JAPAN.

Inventors:

#	Inventor's Name	Inventor's Address
1	KEI MIYANISHI	c/o NIPPON STEEL CORPORATION 6-3 Otemachi 2-chome Chiyoda-ku Tokyo 100-8071
2	MASAYUKI HASHIMURA	c/o NIPPON STEEL CORPORATION 6-3 Otemachi 2-chome Chiyoda-ku Tokyo 100-8071
3	ATSUSHI MIZUNO	c/o NIPPON STEEL CORPORATION 6-3 Otemachi 2-chome Chiyoda-ku Tokyo 100-8071

PCT International Classification Number

C22C 38/00

PCT International Application Number

PCT/JP2008/057880

PCT International Filing date

2008-04-17

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	2007-109897	2007-04-18	Japan