Title:
HIGH CARBON STEEL WIRE HAVING EXCELLENT DRAWABILITY
Document Type and Number:
WIPO Patent Application WO/2016/021556
Kind Code:
A1
Abstract:
This high carbon steel wire having excellent drawability contains certain chemical components, with the remainder comprising Fe and impurities. In a vertical cross section in the longitudinal direction, the area ratio of pearlite is 95% to 100%, inclusive, the average block particle size of the pearlite is 10 μm to 30 μm, and the standard deviation of the block particle size is not more than 20 μm. If Ceq. = C (%) + Si (%)/24 + Mn (%)/6, the tensile strength is 760 × Ceq. + 255 MPa to 760 × Ceq. + 325 MPa, inclusive; and aperture values in tensile testing are not less than -65 × Ceq. + 96 (%), and the standard deviation of the aperture values is not more than 6%.
Inventors:
OKONOGI MAKOTO (JP)
HIRAKAMI DAISUKE (JP)
HIRAKAMI DAISUKE (JP)
Application Number:
PCT/JP2015/071969
Publication Date:
February 11, 2016
Filing Date:
August 03, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C22C38/00; C22C38/04; C22C38/54; C21D8/06
Domestic Patent References:
| WO2007139234A1 | 2007-12-06 | |||
| WO2010066708A1 | 2010-06-17 |
Foreign References:
| JP2004137597A | 2004-05-13 | |||
| JP2012072492A | 2012-04-12 | |||
| JPH05295448A | 1993-11-09 |
Other References:
See also references of EP 3165626A4
Attorney, Agent or Firm:
HAGIWARA, Yasushi et al. (JP)
Yasushi Hagiwara (JP)
Yasushi Hagiwara (JP)
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