公开(公告)号：EP2623625B1

公开(公告)日：2018-10-24

申请号：EP11829490.9

申请日：2011-08-29

申请人： Hyundai Steel Company

发明人： KIM, Kyu-Tae ,  LEE, Myung-Jin ,  PARK, Kyu-Heop

IPC分类号： C22C38/00 ,  C21D8/02 ,  C22C38/28 ,  C22C38/50 ,  C21D8/10 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/46 ,  C22C38/48 ,  C22C38/02

CPC分类号： C21D8/0226 ,  C21D8/0205 ,  C21D8/10 ,  C21D8/105 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： Disclosed are a steel plate for a line pipe having excellent hydrogen induced crack resistance with a tensile strength of 450 MPa or more, and a preparation method thereof. According to the present invention, the steel plate for a line pipe, having excellent hydrogen induced crack resistance comprises: 0.03ˆ¼0.05 wt% of carbon (C); 0.2-0.3 wt% of silicon (Si); 0.5-1.3 wt% of manganese (Mn); 0.010 wt% or less of phosphorus (P); 0.005 wt% or less of sulfur (S); 0.02-0.05 wt% of aluminum (Al); 0.2-0.5 wt% of nickel (Ni); 0.2-0.3 wt% of chromium (Cr); 0.03-0.05 wt% of niobium (Nb); 0.02-0.05 wt% of vanadium (V); 0.01-0.02 wt% of titanium (Ti); 0.001-0.004 wt% of calcium (Ca); and a balance of iron (Fe) and inevitable impurities, and has a tensile strength of 450 MPa or more.

公开(公告)号：EP2623625A2

公开(公告)日：2013-08-07

申请号：EP11829490.9

申请日：2011-08-29

申请人： Hyundai Steel Company

发明人： KIM, Kyu-Tae ,  LEE, Myung-Jin ,  PARK, Kyu-Heop

IPC分类号： C22C38/00 ,  C21D8/02 ,  C22C38/28 ,  C22C38/50

CPC分类号： C21D8/0226 ,  C21D8/0205 ,  C21D8/10 ,  C21D8/105 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： Disclosed are a steel plate for a line pipe having excellent hydrogen induced crack resistance with a tensile strength of 450 MPa or more, and a preparation method thereof. According to the present invention, the steel plate for a line pipe, having excellent hydrogen induced crack resistance comprises: 0.03∼0.05 wt% of carbon (C); 0.2-0.3 wt% of silicon (Si); 0.5-1.3 wt% of manganese (Mn); 0.010 wt% or less of phosphorus (P); 0.005 wt% or less of sulfur (S); 0.02-0.05 wt% of aluminum (Al); 0.2-0.5 wt% of nickel (Ni); 0.2-0.3 wt% of chromium (Cr); 0.03-0.05 wt% of niobium (Nb); 0.02-0.05 wt% of vanadium (V); 0.01-0.02 wt% of titanium (Ti); 0.001-0.004 wt% of calcium (Ca); and a balance of iron (Fe) and inevitable impurities, and has a tensile strength of 450 MPa or more.

摘要翻译： 本发明公开了用于具有450MPa以上的拉伸强度，以及它们的制备方法优良氢致裂纹性的管线管用钢板。 。根据本发明，钢板用于管线管，具有优异的氢致裂纹性包括：碳（C）的0.03¼0.05重量％; 硅（Si）的0.2-0.3％（重量）; 锰（Mn）的0.5-1.3％（重量）; 0.010％（重量）或更少的磷（P）的; 0.005％（重量）或更少的硫（S）的; 的铝0点02分至0点05重量％（人）; 镍（Ni）的0.2-0.5％（重量）; 铬（Cr）的0.2-0.3％（重量）; 铌的0点03到0时05分重量％（NB）; 钒的0点02分至0点05重量％（V）; 钛的0点01到0时02重量％（Ti）的; 钙（Ca）的0001-0004重量％; 和铁（Fe）和不可避免的杂质的平衡，并且具有450MPa以上的拉伸强度。