STEEL WIRE FOR WIRE DRAWING - NIPPON STEEL & SUMITOMO METAL CORP

Title:

STEEL WIRE FOR WIRE DRAWING

Document Type and Number:

WIPO Patent Application WO/2017/069207

Kind Code:

A1

Abstract:

Provided is a steel wire for wire drawing that has a metallographic structure that contains, by mass%, 0.90-1.20% C, 0.10-1.30% Si, 0.20-1.00% Mn, 0.20-1.30% Cr, and 0.005-0.050% Al, with the remainder comprising Fe and impurities, wherein the content of the N, P, and S included as impurities is respectively, by mass%, at most 0.0070% N, at most 0.030% P, and at most 0.010% S, and at least 95% of the metallographic structure, by volume ratio, is a lamellar pearlite structure. The lamellar pearlite structure has an average lamellar gap of 50-75 nm. The average length of cementite in the lamellar pearlite structure is 1.0-4.0 μm, and the proportion of cementite in the lamellar pearlite structure having a length of at most 0.5 μm does not exceed 20%.

Inventors:

TESHIMA TOSHIHIKO (JP)
DAITO YOSHIHIRO (JP)
MANABE TOSHIYUKI (JP)

Application Number:

PCT/JP2016/081137

Publication Date:

April 27, 2017

Filing Date:

October 20, 2016

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

C22C38/00; C21D9/52; C22C38/18; C22C38/32; C21D8/06

Domestic Patent References:

WO2011089782A1

2011-07-28

Foreign References:

JP2013510234A	2013-03-21
KR20120070375A	2012-06-29
JP2001234286A	2001-08-28
JPH0649592A	1994-02-22

Other References: