Title:
HOT ROLLED STEEL MATERIAL FOR STEEL MEMBER EXCELLENT IN FITTABILITY OF FRACTURE SURFACES AFTER FRACTURE SEPARATION, AND STEEL MEMBER
Document Type and Number:
Japanese Patent JP2016166384
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hot rolled steel material reducing a fracture surface neighboring deformation amount during fracture separation and increasing fittability by increasing convexoconcave of a fracture surface and suppressing crack of the fracture surface, and a steel member.SOLUTION: There is adopted a hot rolled steel material for steel member excellent in fittability of fracture surfaces after fracture separation and having a chemical component containing C:0.35 to 0.45 mass%, Si:1.0 to 1.9 mass%, Mn:0.10 to 0.20 mass%, P:0.010 to 0.035 mass%, S:0.06 to 0.10 mass%, Cr:0.25 mass% or less, V:0.20 to 0.40 mass%, N:0.0060 to 0.0150 mass% and B:0.0050 mass% or less.SELECTED DRAWING: None
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Inventors:
YOSHIDA SUGURU
TERAMOTO SHINYA
KUBOTA MANABU
TERAMOTO SHINYA
KUBOTA MANABU
Application Number:
JP2015045856A
Publication Date:
September 15, 2016
Filing Date:
March 09, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C22C38/00; C22C38/60; F16C7/02
Domestic Patent References:
| JP2002356743A | 2002-12-13 | |||
| JPH11199924A | 1999-07-27 | |||
| JPH10324954A | 1998-12-08 | |||
| JPH08291373A | 1996-11-05 | |||
| JP2004277817A | 2004-10-07 | |||
| JP2007277705A | 2007-10-25 |
Foreign References:
| WO1998054372A1 | 1998-12-03 | |||
| WO2007108365A1 | 2007-09-27 | |||
| WO2016143812A1 | 2016-09-15 |
Attorney, Agent or Firm:
Masatake Shiga
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Sumio Tanai
Tomoo Katsumata
Hiroshi Yamaguchi