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.

公开(公告)号：AU2002350227A1

公开(公告)日：2003-06-17

申请号：AU2002350227

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.

公开(公告)号：CA2465604A1

公开(公告)日：2003-06-12

申请号：CA2465604

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: A ferritic stainless steel having improved high temperature mechanical properties includes greater than 25 weight percent chromium, 0.75 up to 1.5 weight percent molybdenum, up to 0.05 weight percent carbon, and at least on e of niobium, titanium, and tantalum, wherein the sum of the weight percentage s of niobium, titanium, and tantalum satisfies the following equation: 0.4 < ;= (%Nb + %Ti + 1/2(%Ta))

公开(公告)号：AU2002242314C1

公开(公告)日：2003-05-12

申请号：AU2002242314

申请日：2002-03-01

Applicant: ATI PROPERTIES INC

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

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 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.

公开(公告)号：MXPA02010475A

公开(公告)日：2003-03-10

申请号：MXPA02010475

申请日：2001-08-02

Applicant: ATI PROPERTIES INC

Inventor： GRUBB JOHN F

IPC: C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C23F1/00 ,  C23F15/00 ,  C23G1/08 ,  C22C38/22 ,  C22C38/40 ,  C23G1/02

Abstract: Se da a conocer un metodo para aumentar la resistencia a la corrosion de un acero austenitico, el cual incluye remover material de cuando menos una porcion de una superficie del acero, de manera que se eliminen o reduzcan en numero los sitios de iniciacion de la corrosion, con relacion al numero que resulta de procesar en una manera convencional. El material puede ser removido desde la porcion por cualquier metodo adecuado, que incluye, por ejemplo, tratamiento por chorros de arena, tratamiento por pulido y/o tratamiento con un bano quimico acido, bajo condiciones mas agresivas que aquellas usadas en el proceso convencional del mismo acero.

公开(公告)号：AU7916901A

公开(公告)日：2002-02-18

申请号：AU7916901

申请日：2001-08-02

Applicant: ATI PROPERTIES INC

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

IPC: C23F1/00 ,  C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C23F15/00 ,  C23G1/08 ,  C23G1/02 ,  C22C38/22 ,  C22C38/40

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：AU2179100A

公开(公告)日：2000-07-03

申请号：AU2179100

申请日：1999-12-13

Applicant: ATI PROPERTIES INC

Inventor： SORACE DOMINIC A ,  GRUBB JOHN F

IPC: C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58 ,  H04L29/08 ,  C22C38/34

Abstract: An alloy having a composition, by weight, of about 0.025% or less carbon, about 0.5 to about 4.1% manganese, about 5.5 to about 6.2% silicon, about 11 to about 15% chromium, about 9.0 to about 15.5% nickel, about 0.8 to about 1.2% molybdenum and about 0.8 to about 2% copper and the remainder being essentially iron with incidental impurities. This composition results in lean alloy content in a high silicon austenitic stainless steel for concentrated sulfuric acid service while maintaining a corrosion rate similar to and competitive with existing alloys for such service. Acceptable characteristics were found when hot working was carried out in the range of about 2100 DEG F. to about 2200 DEG F. Annealing in the range of about 1925 DEG F. to about 2025 DEG F. is preferred, as is rapid water quenching after annealing.

公开(公告)号：EP1392873A4

公开(公告)日：2005-01-05

申请号：EP02725712

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 ,  C21D9/00 ,  C22C19/05 ,  C22C28/00

CPC classification number: F28F21/082 ,  C21D1/09 ,  C21D1/26 ,  C21D6/004 ,  C21D2221/00 ,  C22C38/001 ,  C22C38/44

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：EP1446509A4

公开(公告)日：2005-04-20

申请号：EP02707947

申请日：2002-03-01

Applicant: ATI PROPERTIES INC

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

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

CPC classification number: C21D6/004 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  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 percent 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 to 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.

公开(公告)号：EP1442148A4

公开(公告)日：2004-12-22

申请号：EP02721500

申请日：2002-03-20

Applicant: ATI PROPERTIES INC

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

IPC: C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/58 ,  C21D9/00

CPC classification number: C22C38/001 ,  C21D2211/001 ,  C21D2211/005 ,  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.

Abstract translation: 一种双相不锈钢，其重量百分比包括：碳含量高达0.06％，铬含量高达15％至小于25％，镍含量高于3％至6％，锰含量高达3.75％，氮含量高达0.14％至0.35％，高达2 ％的硅，大于1.4％至小于2.5％的钼，至多小于0.5％的铜，至多小于0.2％的钴，至多0.05％的磷，至多0.005％的硫和0.001至0.0035％的硼， 其余部分是铁和附带的杂质。 双相不锈钢可以被包括在制造物品中，例如带材，棒材，板材，板材，铸件，管材或管道。 还公开了制造这种双相不锈钢的方法。