Title:
S355G10+N-THICKNESS STEEL PLATE FOR OFFSHORE STRUCTURE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/189621
Kind Code:
A1
Abstract:
Disclosed is an S355G10+N-thickness steel plate for an offshore structure, which belongs to the technical field of iron and steel smelting. The steel plate has a maximum thickness of 150 mm, and the following chemical ingredients in percentage by mass: C: 0.08%-0.14%, Mn: 1.30%-1.65%, Si: 0.10%-0.50%, P ≤ 0.015%, S ≤ 0.005%, Nb: 0.015%-0.030%, V ≤ 0.03%, Ti: 0.020%-0.10%, Alt: 0.020%-0.055%, Ni: 0.10%-0.50%, CEV ≤ 0.43%, Pcm ≤ 0.21%, and the balance being Fe and inevitable impurities. An extra thick steel plate of 150 mm has excellent low-temperature toughness, especially for an impact of greater than 100 J at a thickness of 1/2 at -40ºC, and a good welding performance, and better meets the use and service requirements of offshore structures.
Inventors:
PAN ZHONGDE (CN)
WU JUNPING (CN)
JIN XING (CN)
WANG GUANGLEI (CN)
XU CHUNSEN (CN)
SUN XUDONG (CN)
GU XIAOYANG (CN)
NI WEIYING (CN)
LI WEI (CN)
CHE CHAO (CN)
WU JUNPING (CN)
JIN XING (CN)
WANG GUANGLEI (CN)
XU CHUNSEN (CN)
SUN XUDONG (CN)
GU XIAOYANG (CN)
NI WEIYING (CN)
LI WEI (CN)
CHE CHAO (CN)
Application Number:
PCT/CN2020/090752
Publication Date:
September 30, 2021
Filing Date:
May 18, 2020
Export Citation:
Assignee:
NANJING IRON & STEEL CO LTD (CN)
International Classes:
C22C38/02; C22C38/04; C22C38/06; C22C38/08
Foreign References:
| CN105369132A | 2016-03-02 | |||
| CN108085604A | 2018-05-29 | |||
| CN109628853A | 2019-04-16 | |||
| CN101397626A | 2009-04-01 | |||
| CN104726769A | 2015-06-24 | |||
| CN105239003A | 2016-01-13 | |||
| CN103436784A | 2013-12-11 | |||
| JP2004360047A | 2004-12-24 | |||
| JP2012122116A | 2012-06-28 |
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY (SPECIAL CENERAL PARTNERSHIP) (CN)
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