公开(公告)号：DK1446509T3

公开(公告)日：2012-04-10

申请号：DK02707947

申请日：2002-03-01

Applicant: ATI PROPERTIES INC

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

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

公开(公告)号：HK1150244A1

公开(公告)日：2011-11-11

申请号：HK11104286

申请日：2011-04-28

Applicant: ATI PROPERTIES INC

Inventor： RAKOWSKI JAMES M ,  BERGSTROM DAVID S ,  STINNER CHARLES P ,  DUNN JOHN J ,  GRUBB JOHN F

IPC: C22C20060101

公开(公告)号：CA2443545C

公开(公告)日：2010-09-21

申请号：CA2443545

申请日：2002-04-18

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F ,  FRITZ JAMES D

IPC: C21D8/00 ,  C22B9/16 ,  C21D1/09 ,  C21D1/26 ,  C21D1/34 ,  C21D6/00 ,  C21D9/00 ,  C22B9/18 ,  C22B9/20 ,  C22B9/22 ,  C22C19/05 ,  C22C28/00 ,  C22C38/00 ,  C22C38/44 ,  C22C38/58 ,  F28F21/08

Abstract: A method for producing a stainless steel with improved corrosion resistance includes homogenizing at least a portion of an article of a stainless steel including chromium, nickel, and molybdenum and having a PREN of at least 50, as calculated by the equation: PREN = Cr + (3.3 x Mo) + (30 x N), where Cr is weight percent chromium, Mo is weight percent molybdenum, and N is weight percent nitrogen in the steel. In one form of the method, at least a portion of the article is remelted to homogenize the portion. In another form of the method, the article is annealed under conditions sufficient to homogenize at least a surface region of the article. The method of the invention enhances corrosion resistance of the stainless steel as reflected by the steel's critical crevice corrosion temperature.

公开(公告)号：CA2706478A1

公开(公告)日：2009-07-02

申请号：CA2706478

申请日：2008-02-26

Applicant: ATI PROPERTIES INC

Inventor： BERGSTROM DAVID S ,  RAKOWSKI JAMES M ,  STINNER CHARLES P ,  DUNN JOHN J ,  GRUBB JOHN F

IPC: C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/52 ,  C22C38/58

Abstract: An austenitic stainless steel composition having low nickel and molybdenum and exhibiting high corrosion resistance and good formability. The austenitic stainless steel includes, in weight %, up to 0.20 C, 2.0-6.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 5.0-7.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.1-0.35 N, up to 4.0 W, up to 0.01 B, up to 1.0 Co, iron and impurities. The austenitic stainless steel has a ferrite number less than 11 and an MD30 value less than -10°C.

公开(公告)号：AU2008330048A1

公开(公告)日：2009-06-04

申请号：AU2008330048

申请日：2008-02-26

Applicant: ATI PROPERTIES INC

Inventor： STINNER CHARLES P ,  GRUBB JOHN F ,  RAKOWSKI JAMES M ,  BERGSTROM DAVID S ,  DUNN JOHN J

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

Abstract: An austenitic stainless steel having low nickel and molybdenum and exhibiting comparable corrosion resistance and formability properties to higher nickel and molybdenum alloys comprises, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-5.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.1-0.35 N, up to 4.0 W, up to 0.01 B, up to 1.0 Co, iron and impurities, the steel having a ferrite number of less than 10 and a MD30 value of less than 20° C.

公开(公告)号：CA2407591C

公开(公告)日：2008-10-07

申请号：CA2407591

申请日：2001-08-02

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F ,  POLINSKI RONALD E ,  FRITZ JAMES D

IPC: C23F1/00 ,  C23G1/08 ,  C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C23F15/00

Abstract: A method of enhancing the corrosion resistance of an austenitic steel includes removing material from at least a portion of a surface of the steel such that corrosion initiation sites are eliminated or are reduced in number relative to the number resulting from processing in a conventional manner. Material may be removed from the portion by any suitable method, including, for example, grit blasting, grinding and/or acid pickling under conditions more aggressive than those used in conventional processing of the same steel.

公开(公告)号：AU2002252427B2

公开(公告)日：2008-08-07

申请号：AU2002252427

申请日：2002-03-20

Applicant: ATI PROPERTIES INC

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

IPC: C22C38/44 ,  C22C38/00 ,  C22C38/42 ,  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.

公开(公告)号：AU2001279169B9

公开(公告)日：2006-05-18

申请号：AU2001279169

申请日：2001-08-02

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F ,  POLINSKI RONALD E ,  FRITZ JAMES D

IPC: C23F1/00 ,  C23G1/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C23F15/00 ,  C23G1/08

Abstract: A method of enhancing the corrosion resistance of an austenitic steel includes removing material from at least a portion of a surface of the steel such that corrosion initiation sites are eliminated or are reduced in number relative to the number resulting from processing in a conventional manner. Material may be removed from the portion by any suitable method, including, for example, grit blasting, grinding and/or acid pickling under conditions more aggressive than those used in conventional processing of the same steel.

公开(公告)号：AU2002256261B2

公开(公告)日：2005-02-10

申请号：AU2002256261

申请日：2002-04-18

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F ,  FRITZ JAMES D

IPC: C22B9/16 ,  C21D1/09 ,  C21D1/26 ,  C21D1/34 ,  C21D6/00 ,  C21D8/00 ,  C22B9/18 ,  C22B9/20 ,  C22B9/22 ,  C22C38/00 ,  C22C38/44 ,  C22C38/58 ,  F28F21/08 ,  C21D008/00 ,  C21D001/26 ,  C22C038/44 ,  C22C028/00 ,  C22C019/05 ,  C21D009/00 ,  C21D001/09

Abstract: A method for producing a stainless steel with improved corrosion resistance includes homogenizing at least a portion of an article of a stainless steel including chromium, nickel, and molybdenum and having a PREN of at least 50, as calculated by the equation:where Cr is weight percent chromium, Mo is weight percent molybdenum, and N is weight percent nitrogen in the steel. In one form of the method, at least a portion of the article is remelted to homogenize the portion. In another form of the method, the article is annealed under conditions sufficient to homogenize at least a surface region of the article. The method of the invention enhances corrosion resistance of the stainless steel as reflected by the steel's critical crevice corrosion temperature.

公开(公告)号：NO20042641A

公开(公告)日：2004-06-23

申请号：NO20042641

申请日：2004-06-23

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F

IPC: C21D9/46 ,  C21D6/00 ,  C21D6/02 ,  C22C38/00 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/50 ,  H01M8/02 ,  H01M8/12

CPC classification number: C21D6/002 ,  C21D6/02 ,  C22C38/004 ,  C22C38/005 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  H01M8/021 ,  H01M2008/1293 ,  Y02P70/56