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    CORROSION RESISTANT LEAN AUSTENITIC STAINLESS STEEL
    32.
    发明专利
    CORROSION RESISTANT LEAN AUSTENITIC STAINLESS STEEL 未知

    公开(公告)号：SG186625A1

    公开(公告)日：2013-01-30

    申请号：SG2012089447

    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

    Abstract: CORROSION RESISTANT LEAN AUSTENITIC STAINLESS STEELAn 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.No figure

    ACERO INOXIDABLE AUSTENITICO DELGADO RESISTENTE A LA CORROSION.
    34.
    发明专利
    ACERO INOXIDABLE AUSTENITICO DELGADO RESISTENTE A LA CORROSION. 未知

    公开(公告)号：MX2010005668A

    公开(公告)日：2010-06-03

    申请号：MX2010005668

    申请日：2008-02-26

    Applicant: ATI PROPERTIES INC

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

    IPC: C22C38/00

    Abstract: Una composición de acero inoxidable austenítico que tiene bajo contenido de níquel y molibdeno y que exhibe elevada resistencia a la corrosión y buena capacidad de formación. El acero inoxidable austenítico incluye, en % en peso, hasta 0.20 de C, 2.0-6.0 de Mn, hasta 2.0 de Si, 16.0-23.0 de Cr, 5.0-7.0 de Ni, hasta 3.0 de Mo, hasta 3.0 de Cu, 0.1-0.35 de N, hasta 4.0 de W, hasta 0.01 de B, hasta 1.0 de Co, hierro e impurezas. El acero inoxidable austenítico tiene un número de ferrita de menos de 11 y un valor de MD3O menor de -10°C.

    DUPLEX STAINLESS STEELS
    35.
    发明专利
    DUPLEX STAINLESS STEELS 未知

    公开(公告)号：CA2462963C

    公开(公告)日：2009-10-13

    申请号：CA2462963

    申请日：2002-03-01

    Applicant: ATI PROPERTIES INC

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

    IPC: C21D9/00 ,  C21D6/00 ,  C22C38/00 ,  C22C38/40 ,  C22C38/44 ,  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 25 perce nt chromium; 1 to less than 2.5 percent nickel; up to 3.75 percent manganese; greater than 0.12 up to 0.35 percent nitrogen; up to 2 percent silicon; up t o 1.5 percent molybdenum; up to 0.5 percent copper; up to 0.2 percent cobalt; up to 0.05 percent phosphorous; up to 0.005 percent sulfur; 0.001 to 0.0035 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 or piping. A method for making the duplex stainless steel of the invention also is disclosed.

    36.
    发明专利
    未知

    公开(公告)号：DK1442148T3

    公开(公告)日：2009-08-10

    申请号：DK02721500

    申请日：2002-03-20

    Applicant: ATI PROPERTIES INC

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

    IPC: C22C38/44 ,  C21D9/00 ,  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.

    AUSTENITIC STAINLESS STEEL LOW IN NICKEL CONTAINING STABILIZING ELEMENTS
    37.
    发明专利
    AUSTENITIC STAINLESS STEEL LOW IN NICKEL CONTAINING STABILIZING ELEMENTS 未知

    公开(公告)号：CA2706473A1

    公开(公告)日：2009-07-02

    申请号：CA2706473

    申请日：2008-02-20

    Applicant: ATI PROPERTIES INC

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

    IPC: C22C38/38 ,  C22C38/58

    Abstract: An austenitic stainless steel composition including relatively low nickel and molybdenum levels, and exhibiting corrosion resistance, resistance to elevated temperature deformation, and formability properties comparable to certain alloys including higher nickel and molybdenum levels. Embodiments of the austenitic stainless steel include, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-7.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.05-0.35 N, up to 4.0 W, (7.5(%C)) = (Nb + Ti + V +Ta + Zr) = 1.5, up to 0.01 B, up to 1.0 Co, iron and impurities. Additionally, embodiments of the steel may include 0.5 = (Mo + W/2) = 5.0 and/or 1.0 = (Ni + Co) = 8Ø

    Ferritic stainless steel having a high temperaturecreep resistance.
    39.
    发明专利
    Ferritic stainless steel having a high temperaturecreep resistance. 未知

    公开(公告)号：ZA200403628B

    公开(公告)日：2006-02-22

    申请号：ZA200403628

    申请日：2004-05-12

    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 ,  C22C ,  C21D ,  H01M

    Abstract: The invention provides a method for making a ferritic stainless steel, the steel having a coefficient of thermal expansion within about 25 percent of the coefficient of thermal expansion of stabilized zirconia between 20°C (68°F) and 1000°C (1832°F), and at least one creep property selected from creep rupture strength of at least 1000 psi at 900°C (1652°F), time to 1% creep strain of at least 100 hours at 900°C (1652°F) under load of 1000 psi, and time to 2% creep strain of at least 200 hours at 900°C (1652°F) under load of 1000 psi, the method comprising providing a ferritic stainless steel comprising greater than 25 weight percent chromium, 0.75 to less than 1.5 weight percent molybdenum, up to 0.05 weight percent carbon, and at least one of niobium, titanium, and tantalum, wherein the sum of the weight percentages of niobium, titanium, and tantalum satisfies the equation 0.4 ‰¤ (%Nb + %Ti + ½(%Ta)) ‰¤ 1, and solution annealing the steel.

    40.
    发明专利
    未知

    公开(公告)号：BR0214588A

    公开(公告)日：2004-11-03

    申请号：BR0214588

    申请日：2002-11-21

    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 ,  C21D9/00 ,  H01M8/00

    Abstract: The invention provides a method for making a ferritic stainless steel, the steel having a coefficient of thermal expansion within about 25 percent of the coefficient of thermal expansion of stabilized zirconia between 20°C (68°F) and 1000°C (1832°F), and at least one creep property selected from creep rupture strength of at least 1000 psi at 900°C (1652°F), time to 1% creep strain of at least 100 hours at 900°C (1652°F) under load of 1000 psi, and time to 2% creep strain of at least 200 hours at 900°C (1652°F) under load of 1000 psi, the method comprising providing a ferritic stainless steel comprising greater than 25 weight percent chromium, 0.75 to less than 1.5 weight percent molybdenum, up to 0.05 weight percent carbon, and at least one of niobium, titanium, and tantalum, wherein the sum of the weight percentages of niobium, titanium, and tantalum satisfies the equation 0.4 ‰¤ (%Nb + %Ti + ½(%Ta)) ‰¤ 1, and solution annealing the steel.

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