公开(公告)号：US09822434B2

公开(公告)日：2017-11-21

申请号：US13140422

申请日：2009-12-17

申请人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

发明人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

IPC分类号： C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D8/06 ,  C21D8/08 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

CPC分类号： C22C38/001 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0273 ,  C21D8/06 ,  C21D8/08 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

摘要： The invention relates to a duplex stainless steel having austenitic-ferritic microstructure of 35-65% by volume, preferably 40-60% by volume of ferrite and having good weldability, good corrosion resistance and good hot workability. The steel contains 0.005-0.04% by weight carbon, 0.2-0.7% by weight silicon, 2.5-5% by weight manganese, 23-27% by weight chromium, 2.5-5% by weight nickel, 0.5-2.5% by weight molybdenum, 0.2-0.35% by weight nitrogen, 0.1-1.0% by weight copper, optionally less than 1% by weight tungsten, less than 0.0030% by weight one or more elements of the group containing boron and calcium, less than 0.1% by weight cerium, less than 0.04% by weight aluminium, less than 0.010% by weight sulphur and the rest iron with incidental impurities.

公开(公告)号：US20110250088A1

公开(公告)日：2011-10-13

申请号：US13140422

申请日：2009-12-17

申请人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

发明人： Peter Samuelsson ,  Simon Lille ,  Jan-Olof Andersson ,  Mats Liljas ,  Erik Schedin ,  Pelle Johansson

IPC分类号： C22C38/58 ,  C22C38/06 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44

CPC分类号： C22C38/001 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0273 ,  C21D8/06 ,  C21D8/08 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

摘要： The invention relates to a duplex stainless steel having austenitic-ferritic microstructure of 35-65% by volume, preferably 40-60% by volume of ferrite and having good weldability, good corrosion resistance and good hot workability. The steel contains 0.005-0.04% by weight carbon, 0.2-0.7% by weight silicon, 2.5-5% by weight manganese, 23-27% by weight chromium, 2.5-5% by weight nickel, 0.5-2.5% by weight molybdenum, 0.2-0.35% by weight nitrogen, 0.1-1.0% by weight copper, optionally less than 1% by weight tungsten, less than 0.0030% by weight one or more elements of the group containing boron and calcium, less than 0.1% by weight cerium, less than 0.04% by weight aluminium, less than 0.010% by weight sulphur and the rest iron with incidental impurities.

摘要翻译： 本发明涉及具有35-65体积％，优选40-60体积％的铁素体的奥氏体 - 铁素体显微组织和具有良好的可焊性，良好的耐腐蚀性和良好的热加工性的双相不锈钢。 钢含有0.005-0.04重量％的碳，0.2-0.7重量％的硅，2.5-5重量％的锰，23-27重量％的铬，2.5-5重量％的镍，0.5-2.5重量％的钼 ，0.2-0.35重量％的氮，0.1-1.0重量％的铜，任选地小于1重量％的钨，小于0.0030重量％的含硼和钙的一种或多种元素，小于0.1重量％ 铈，小于0.04重量％的铝，小于0.010重量％的硫，剩余的铁与附带的杂质。