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    1.
    发明专利
    未知

    公开(公告)号：NO20042201L

    公开(公告)日：2004-05-27

    申请号：NO20042201

    申请日：2004-05-27

    Applicant: ATI PROPERTIES INC

    Inventor： GRUBB JOHN F ,  BERGSTROM DAVIS ,  DUNN JOHN J ,  PRATT WILLIAM A

    IPC: C21D6/00 ,  C22C38/00 ,  C22C38/40 ,  C22C38/44 ,  C21D9/00 ,  C22C38/54 ,  C22C38/58

    Abstract: A duplex stainless steel includes less than, in weight percent, 3 percent nickel and 1.5 percent molybdenum. In one embodiment, the duplex stainless steel includes, in weight percent, up to 0.06 percent carbon, 15 to less than 19 percent chromium, 1 to less than 3 percent nickel, up to 3.75 percent manganese, greater than 0.12 up to 0.35 percent nitrogen, up to 2 percent silicon, up to 1.5 percent molybdenum, up to 0.5 percent copper, up to 0.2 percent cobalt, up to 0.05 percent phosphorus, up to 0.005 percent sulphur, up to 0.03 percent boron, iron and incidental impurities. The duplex stainless steel provided may be provided in the form of an article of manufacture, such as strip, bar, plate, sheet, casting, tubing and piping. A method for making the duplex stainless steel of the invention is also disclosed.

    2.
    发明专利
    未知

    公开(公告)号：NO20041897L

    公开(公告)日：2004-05-07

    申请号：NO20041897

    申请日：2004-05-07

    Applicant: ATI PROPERTIES INC

    Inventor： GRUBB JOHN F ,  BERGSTROM DAVIS ,  DUNN JOHN J ,  PRATT WILLIAM A

    IPC: C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/58

    Abstract: A duplex stainless steel including, in weight percent, up to 0.06 percent carbon, 15 up to less than 25 percent chromium, greater than 3 up to 6 percent nickel, up to 3.75 percent manganese, 0.14 up to 0.35 percent nitrogen, up to 2 percent silicon, greater than 1.4 up to less than 2.5 percent molybdenum, up to less than 0.5 percent copper, up to less than 0.2 percent cobalt, up to 0.05 percent phosphorous, up to 0.005 percent sulfur, and 0.001 up to 0.0035 percent boron, with the remainder being iron and incidental impurities is disclosed. The duplex stainless steel may be included in an article of manufacture, such as a strip, bar, plate, sheet, casting, tubing or piping. A method for making such a duplex stainless steel is also disclosed.

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