Eight Percent Or More Nickel Containing Patents (Class 420/43)
  • Patent number: 10305239
    Abstract: A pane provided with at least one electrical connection element is described. The pane has a substrate, an electroconductive structure on a region of the substrate, a layer of soldering mass on a region of the electroconductive structure, and a connection element on the solder mass. The connection element contains a first and a second base region, a first and a second transition region, and a bridge region between the first and the second transition region, a first and a second contact surface arranged on a lower side of the first and second base regions. The first and the second contact surfaces and surfaces of the first and the second transition regions, facing the substrate are connected to the electroconductive structure by the solder mass. An angle between a surface of the substrate and each tangential plane of the surfaces of the first and the second transition region, facing the substrate, is less than 90°.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: May 28, 2019
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Christoph Degen, Bernhard Reul, Mitja Rateiczak, Andreas Schlarb, Lothar Lesmeister
  • Patent number: 9579870
    Abstract: A welded joint of duplex stainless steel, which can suppress precipitation ? phase under high heat input welding, is excellent in SCC resistance under high-temperature chloride environments. A weld metal of the welded joint contains, in mass percent, C: at most 0.030%, Si: 0.20 to 1.00%, Mn: at most 8.00%, P: at most 0.040%, S: at most 0.0100%, Cu: at most 2.00%, Ni: 7.00 to 12.00%, Cr: 20.0 to 30.0%, Mo: 1 to 4%, N: 0.100 to 0.350%, sol. Al: at most 0.040%, and O: at most 0.035%, the balance being Fe and impurities. The weld metal satisfies Expressions (1) and (3): 2.2Cr+7Mo+3Cu>66??(1) Cr+11Mo+10Ni?12(Cu+30N)<100??(3) where a content (mass percent) of each element in one of the base metal and weld metal is used for each element in Expressions (1) and (3).
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: February 28, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroyuki Nagayama, Kenta Yamada, Masahiko Hamada, Daisuke Motoya, Hisashi Amaya
  • Patent number: 9196408
    Abstract: A method for manufacturing a metal composite component is characterized in that the composite component (60) is provided with at least two sections (61, 62, 63) of different magnetization, at least two sections (61, 62, 63) being situated on the one-piece component (60) in direct succession. The starting material for manufacturing the composite material (60) is a semi-austenitic steel, which is provided as a cylindrical blank. The blank is subsequently shaped into an intended shape of the composite component (60) and rendered magnetizable in a multistage forming and/or heat treatment process, the heat treatment being performed in such a way that the component has a saturation polarization Js=0.9-1.5 T. This is followed by a local heat treatment in a partial area under simultaneous cooling of the areas of the composite component (60) where the magnetic properties are not to be changed, in order to define strictly delimited transitional areas between the different areas of magnetization (61, 62, 63).
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: November 24, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Max Seitter, Stefan Oetinger
  • Patent number: 9150947
    Abstract: An austenitic stainless steel having excellent resistance to scale peeling which can suppress peeling of a protective oxide scale which is formed on the steel surface even when the steel undergoes repeated cycles of high temperature heating and cooling and which is suitable for use in a high temperature, humidified gas environment at a high temperature and particularly at 1023 K or above has a steel composition consisting essentially of C: 0.01-0.15%, Si: 0.01-3%, Mn: 0.01-2%, Cu: 0.1-2.5%, Cr: 23-30%, Ni: 16-25%, Al: 0.005-0.20%, N: 0.001-0.40%, P: at most 0.04%, S: at most 0.01%, at least one of Y and Ln series elements: a total of 0.005-0.1%, and a balance of Fe and unavoidable impurities, with the number of inclusions containing Y and Ln series elements in the steel surface being at most 5×10?3/?m2.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: October 6, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yoshitaka Nishiyama, Nobuo Otsuka
  • Publication number: 20150110666
    Abstract: An acetone storage tank or acetone transfer pipe comprising stainless steel in which the amount of Cr is in the range 10.5 wt % to 20 wt %; the amount of Ni is ?9 wt %, and the amount of Mo is 2.75%?Mo?0 wt %, of the stainless steel.
    Type: Application
    Filed: February 26, 2013
    Publication date: April 23, 2015
    Inventors: René Dicke, Andreas Leitner
  • Publication number: 20140308155
    Abstract: An efficient polishing method for polishing an alloy material to have an excellent mirror surface is provided. The alloy material contains a main component and 0.1% by mass or more of an element that has a Vickers hardness (HV) different from the Vickers hardness of the main component by 5 or more. A polishing composition used in the polishing method contains abrasive grains and an oxidant. The alloy material is preferably an aluminum alloy, a titanium alloy, a stainless steel, a nickel alloy, or a copper alloy. It is also preferable that the alloy material is subjected to preliminary polishing before being subjected to polishing in which the polishing composition is used.
    Type: Application
    Filed: November 19, 2012
    Publication date: October 16, 2014
    Inventors: Hitoshi Morinaga, Hiroshi Asano, Maiko Asai, Shogo Tsubota, Kazusei Tamai
  • Patent number: 8852362
    Abstract: There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 ?m from the inner surface of the steel pipe: (?/?)×?/?×100?0.3 where the meanings of symbols in the above Formula are as follows: ?: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees ?: the number of total pixels of digital image in region of measurement using electron backscattering pattern ?: analysis pitch width of electron backscattering pattern (?m) ?: grain boundary width (?m).
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: October 7, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Yoshitaka Nishiyama, Mitsuru Yoshizawa, Masahiro Seto, Katsuki Tanaka
  • Publication number: 20140154129
    Abstract: Stainless steel for fuel cell separators contains C: ?0.03%, Si: ?1.0%, Mn: ?1.0%, S: ?0.01%, P: ?0.05%, Al: ?0.20%, N: ?0.03%, Cr: 16 to 40%, and one or more of Ni: ?20%, Cu: ?0.6% and Mo: ?2.5%, the balance being Fe and inevitable impurities. According to X-ray photoelectron spectroscopy, the surface of the stainless steel contains fluorine and provides a 3.0 or higher ratio of the total of atomic concentrations of Cr and Fe in other than the metallic forms calculated from data resulting from the separation of peaks of Cr and Fe into metallic peaks and peaks other than the metallic peaks to the total of atomic concentrations of Cr and Fe in the metallic forms calculated from data resulting from the separation of peaks of Cr and Fe into metallic peaks and peaks other than the metallic peaks.
    Type: Application
    Filed: July 25, 2012
    Publication date: June 5, 2014
    Applicant: JFE STEEL CORPORATION
    Inventors: Noriko Makiishi, Hisato Noro, Shin Ishikawa, Shinsuke Ide, Tomohiro Ishii, Masayasu Nagoshi
  • Patent number: 8728253
    Abstract: A method for handling aqueous solutions of methanesulfonic acid (MSA) having a concentration from 50 to 99% by weight of MSA and a total chlorine content of less than 50 mg/kg in apparatuses in which the aqueous MSA solution is in contact with steel surfaces. The steel comprises austenitic steels having a chromium content of from 15 to 22% by weight and a nickel content of from 9 to 15% by weight.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: May 20, 2014
    Assignee: BASF SE
    Inventors: Stefan Faβbender, Peter Petersen, Arnulf Lauterbach, Günter Renz, Frieder Borgmeier, Peter Kolb
  • Publication number: 20130287619
    Abstract: In one embodiment, a neutron shielding material is formed of boron-adding stainless steel of either austenite-ferrite two-phase stainless steel or ferritic stainless steel, the austenite-ferrite two-phase stainless steel containing, in mass %, B: 0.5% to 2.0%, Ni: 3.0 to 10.0%, and Cr: 21.00 to 32.00%, the ferritic stainless steel containing, in mass %, B: 0.5% to 2.0%, Ni: 4.0% or less, and Cr: 11.00 to 32.00%, and the boron-adding stainless steel being well in ductility and thermal conduction property.
    Type: Application
    Filed: June 12, 2013
    Publication date: October 31, 2013
    Inventors: Masanori Kibata, Yuuji Saito, Motoji Tsubota, Yoshitaka Doken, Makoto Sato, Shunichi Hatano, Masanori Ishiga, Go Ono
  • Patent number: 8540825
    Abstract: A low-temperature stainless steel carburization method comprises steps: providing a stainless steel material; placing the stainless steel material in a halogen-free reducing environment and maintaining the stainless steel at a first temperature ranging 1,050 to 1,400° C.; and placing the stainless steel material in a carbon-bearing atmosphere and maintaining the stainless steel material at a second temperature lower than 600° C. to implant carbon atoms into the stainless steel material to form a carburized layer on the surface of the stainless steel material. A halide-bearing gas or solution is not to be applied to activate the passivation layer, so the fabrication cost would be reduced and the safety of carburization process would be enhanced. Besides, the environment can be prevented from halide pollution.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: September 24, 2013
    Assignee: Taiwan Powder Technologies Co., Ltd.
    Inventors: Kuen-Shyang Hwang, Li-Hui Cheng, Yung-Chung Lu
  • Patent number: 8529708
    Abstract: A method for making armor plate that is resistant to armor piercing small arms ammunition is provided. The armor plate includes a steel plate having a nominal chemical composition in weight percent of 0.4C-1.8Ni-0.8Cr-0.25Mo. The steel plate is carburized on one side and produces a carburized side and a non-carburized side. The carburized side of the steel plate has a carbon concentration of at least 0.9% by weight and the non-carburized side has a carbon concentration of between 0.38 and 0.45% by weight. After the steel plate has been carburized, it is subsequently thermally processed such that the carburized side has a hardness of at least 58 Rockwell Hardness C (HRC), and the non-carburized side has a hardness of between >=50 and <=55 HRC.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: September 10, 2013
    Inventor: Jay Carl Locke
  • Patent number: 8430075
    Abstract: A superaustenitic stainless steel comprises in weight %, 0.15 to 0.9% C, 0.2 to 1.3% Si, 0 to 0.45% Mn, 32.5 to 37.5% Cr, 13.5 to 17.5% Ni, 3.2 to 5.5% Mo, 0 to 2% Nb, 0 to 0.5% B, 0 to 2% Zr and 30 to 51% Fe. In a preferred embodiment, the superaustenitic stainless steel consists essentially of, in weight %, 0.5 to 0.9% C, 0.2 to 0.5% Si, 0.2 to 0.4% Mn, 33.0 to 35.0% Cr, 15.5 to 17.5% Ni, 4.0 to 4.5% Mo, 0.7 to 0.9% Nb, 0.07 to 0.13% B, 0 to 0.05% Zr and 40 to 46% Fe. The superaustenitic stainless steel is useful for valve seat inserts for internal combustion engines such as diesel or natural gas engines.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: April 30, 2013
    Assignee: L.E. Jones Company
    Inventors: Cong Yue Qiao, Todd Trudeau
  • Patent number: 8431072
    Abstract: An austenitic stainless steel alloy consisting essentially of, in terms of weight percent ranges 0.15-0.5C; 8-37Ni; 10-25Cr; 2.5-5Al; greater than 0.6, up to 2.5 total of at least one element selected from the group consisting of Nb and Ta; up to 3Mo; up to 3Co; up to 1W; up to 3Cu; up to 15Mn; up to 2Si; up to 0.15B; up to 0.05P; up to 1 total of at least one element selected from the group consisting of Y, La, Ce, Hf, and Zr; <0.3Ti+V; <0.03N; and, balance Fe, where the weight percent Fe is greater than the weight percent Ni, and wherein the alloy forms an external continuous scale comprising alumina, and a stable essentially single phase FCC austenitic matrix microstructure, the austenitic matrix being essentially delta-ferrite free and essentially BCC-phase-free. A method of making austenitic stainless steel alloys is also disclosed.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: April 30, 2013
    Assignee: UT-Battelle, LLC
    Inventors: Govindarajan Muralidharan, Yukinori Yamamoto, Michael P. Brady
  • Publication number: 20130047786
    Abstract: A corrosion resistant, neutron absorbing, austenitic alloy powder is disclosed having the following composition in weight percent. C 0.08 max. Mn up to 3 Si up to 2 P 0.05 max. S 0.03 max. Cr 17-27 Ni 11-20 Mo + (W/1.92) ??up to 5.2 BEq 0.78-13.0 O ?0.1 max. N ??up to 0.2 Y less than 0.005 The alloy contains at least about 0.25% B, at least about 0.05% Gd, and the balance of the alloy composition is iron and usual impurities. BEq is defined as % B+4.35×(% Gd). An article of manufacture made from consolidated alloy powder is also disclosed which is characterized by a plurality of boride and gadolinide particles dispersed within a matrix. The boride and gadolinide particles are predominantly M2B, M3B2, M3X, and M5X in form, where X is gadolinium or a combination of gadolinium and boron and M is one or more of the elements silicon, chromium, nickel, molybdenum, iron.
    Type: Application
    Filed: August 25, 2011
    Publication date: February 28, 2013
    Inventors: Michael L. Schmidt, Gregory J. Del Corso, Patrick C. Ray, Ning Ma
  • Publication number: 20130042948
    Abstract: A decorative steel article having a textured crystalline surface includes a steel alloy, single crystal or large, macroscopic grained crystal body. The steel alloy includes iron and at least one element selected from the group of nickel and chromium. The steel article has a surface characterized by a decorative, macroscopic, martensitic phase surface feature. The decorative steel article is suitable for sundry applications where an enhanced visual appearance is desirable.
    Type: Application
    Filed: August 19, 2011
    Publication date: February 21, 2013
    Applicant: UT-BATTELLE, LLC
    Inventor: Lynn A. Boatner
  • Publication number: 20130008748
    Abstract: A friction disc (2) with an anti-abrasion layer (1) and integrated wear indication, the friction disc (2) having a friction surface (2?) which is completely covered by the anti-abrasion layer (1). At least one indication surface element (3) which occupies a part of the friction surface (2?) and differs from at least one of the components friction surface (2?) and anti-abrasion layer (1) of the friction disc (2) in at least one of the features coloring and texture is provided between the anti-abrasion layer (1) and the friction disc (2). Compositions of the anti-abrasion layer (1) of the friction disc (2).
    Type: Application
    Filed: March 16, 2011
    Publication date: January 10, 2013
    Applicant: DAIMLER AG
    Inventors: Oliver Lembach, Ralph Mayer
  • Patent number: 8318083
    Abstract: The present invention addresses the need for new austenitic steel compositions with higher creep strength and higher upper temperatures. The new austenitic steel compositions retain desirable phases, such as austenite, M23C6, and MC in its microstructure to higher temperatures. The present invention also discloses a methodology for the development of new austenitic steel compositions with higher creep strength and higher upper temperatures.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: November 27, 2012
    Assignee: UT-Battelle, LLC
    Inventors: Roman I Pankiw, Govindarajan Muralidharan, Vinod Kumar Sikka, Philip J. Maziasz
  • Publication number: 20120187315
    Abstract: In one embodiment, a neutron shielding material is formed of boron-adding stainless steel of either austenite-ferrite two-phase stainless steel or ferritic stainless steel, the austenite-ferrite two-phase stainless steel containing, in mass %, B: 0.5% to 2.0%, Ni: 3.0 to 10.0%, and Cr: 21.00 to 32.00%, the ferritic stainless steel containing, in mass %, B: 0.5% to 2.0%, Ni: 4.0% or less, and Cr: 11.00 to 32.00%, and the boron-adding stainless steel being well in ductility and thermal conduction property.
    Type: Application
    Filed: January 27, 2012
    Publication date: July 26, 2012
    Inventors: Masanori KIBATA, Yuuji SAITO, Motoji TSUBOTA, Yoshitaka DOKEN, Makoto SATO, Shunichi HATANO, Masanori ISHIGA, Go ONO
  • Patent number: 8137613
    Abstract: An austenitic stainless steel welded joint, whose base metal and weld metal each comprises, by mass percent, C: not more than 0.3%, Si: not more than 2%, Mn: 0.01 to 3.0%, P: more than 0.04% to not more than 0.3%, S: not more than 0.03%, Cr: 12 to 30%, Ni: 6 to 55%, rare earth metal(s): more than 0.2% to not more than 0.6%, sol. Al: 0.001 to 3% and N: not more than 0.3%, with the balance being Fe and impurities, and satisfies the formula of (Cr+1.5×Si+2×P)/(Ni+0.31×Mn+22×C+14.2×N+5×P)<1.388, in spite of having a high P content and showing the fully austenitic solidification, has excellent resistance to the weld solidification cracking. Therefore, the said austenitic stainless steel welded joint can be widely used in such fields where a welding fabrication is required. Each element symbol in the above formula represents the content by mass percent of the element concerned.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: March 20, 2012
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Takahiro Osuki, Kazuhiro Ogawa, Hirokazu Okada, Masaaki Igarashi
  • Patent number: 8105447
    Abstract: An austenitic stainless steel hot-rolled steel material can be provided which has sea-water resistance and strength superior to conventional steel. Low-temperature toughness can be maintained, which is preferable in a structural member of speedy craft. The steel material can include an austenitic stainless steel hot-rolled steel material which excels in the properties of corrosion resistance, proof stress, and low-temperature toughness. In such austenitic stainless steel hot-rolling steel material, e.g., PI [=Cr+3.3(Mo+0.5W)+16N] ranges from 35 to 40, ? cal [=2.9(Cr+0.3Si+Mo+0.5W)?2.6(Ni+0.3Mn+0.25Cu+35C+20N)?18] ranges from ?6 to +2, and a 0.2% proof stress at room temperature is not less than 550 MPa, Charpy impact value measured using a V-notch test piece at ?40° C. is not less than 100 J/cm2, and the pitting potential measured in a deaerated aqueous solution of 10% NaCl at 50° C. (Vc?100) is not less than 500 mV (as it relates to saturated Ag/AgCl).
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: January 31, 2012
    Assignee: Nippon Steel & Sumikin Stainless Steel Corporation
    Inventors: Yuusuke Oikawa, Shinji Tsuge, Shigeo Fukumoto, Kazuhiro Suetsugu, Ryo Matsuhashi, Hiroshige Inoue
  • Publication number: 20110293463
    Abstract: An alloy composition comprising iron present in the range of 49 atomic percent (at %) to 65 at %, nickel present in the range of 10.0 at % to 16.5 at %, cobalt optionally present in the range of 0.1 at % to 12 at %, boron present in the range of 12.5 at % to 16.5 at %, silicon optionally present in the range of 0.1 at % to 8.0 at %, carbon optionally present in the range of 2 at % to 5 at %, chromium optionally present in the range of 2.5 at % to 13.35 at %, and niobium optionally present in the range of 1.5 at % to 2.5 at %, wherein the alloy composition exhibits spinodal glass matrix microconstituents when cooled at a rate in the range of 103K/s to 104K/s and develops a number of shear bands per linear meter in the range of greater than 1.1×102 m?1 to 107 m?1 upon application of a tensile force applied at a rate of 0.001 s?1.
    Type: Application
    Filed: May 27, 2011
    Publication date: December 1, 2011
    Inventors: Daniel James BRANAGAN, Brian E. MEACHAM, Jason K. WALLESER, Jikou ZHOU, Alla V. SERGUEEVA
  • Publication number: 20110248071
    Abstract: Disclosed is an austenitic welding material which contains C: 0.01 wt % or less, Si: 0.5 wt % or less, Mn: 0.5 wt % or less, P: 0.005 wt % or less, S: 0.005 wt % or less, Ni: 15 to 40 wt %, Cr: 20 to 30 wt %, N: 0.01 wt % or less, 0: 0.01 wt % or less, and the balance of Fe and inevitable impurities, wherein the content of B contained as one of the inevitable impurities in the welding material is 3 wt ppm or less, and the total content of C, P, S, N and O in the welding material is 0.02 wt % or less.
    Type: Application
    Filed: December 16, 2009
    Publication date: October 13, 2011
    Applicants: JAPAN ATOMIC ENERGY AGENCY, KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), KOBELCO RESEARCH INSTITUTE, INC.
    Inventors: Kiyoshi Kiuchi, Ikuo Ioka, Chiaki Kato, Nobutoshi Maruyama, Ichiro Tsukatani, Makoto Tanabe, Jumpei Nakayama
  • Publication number: 20110192127
    Abstract: A filter comprising a porous sintered stainless steel is provided. The filter includes 10-30% chromium, 5-25% nickel, 0.5-3% manganese; 1-4% silicon, and 0-3% molybdenum with the remainder being iron and inevitable impurities. The sintered steel has a density less than 80% of full density. The use of a stainless steel powder for the preparation of a filter having improved permeability at high temperatures also is described.
    Type: Application
    Filed: April 20, 2011
    Publication date: August 11, 2011
    Applicant: HÖGANÄS AB
    Inventors: Owe Mårs, Ingrid Hauer
  • Patent number: 7847118
    Abstract: A process for continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated in a reactor which is manufactured from a composite material which consists, on its side in contact with the reaction chamber, of a steel B with specific elemental composition which, on its side facing away from the reaction chamber, either directly or via an intermediate layer of copper, or of nickel, or of copper and nickel, is plated onto a steel A with specific elemental composition, and also partial oxidations of the dehydrogenated hydrocarbon and the reactor itself.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: December 7, 2010
    Assignee: BASF SE
    Inventors: Claus Hechler, Wilhelm Ruppel, Martin Dieterle, Karl-Heinrich Klappert, Klaus Joachim Mueller-Engel, Goetz-Peter Schindler, Catharina Klanner, Hans-Juergen Bassler
  • Patent number: 7790942
    Abstract: A process for continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated in a reactor which is manufactured from a steel with specific elemental composition on its side in contact with the reaction gas, and also partial oxidations of the dehydrogenated hydrocarbon and the reactor itself.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: September 7, 2010
    Assignee: BASF SE
    Inventors: Claus Hechler, Wilhelm Ruppel, Goetz-Peter Schindler, Catharina Klanner, Hans-Juergen Bassler, Martin Dieterle, Karl-Heinrich Klappert, Klaus Joachim Mueller-Engel
  • Patent number: 7780798
    Abstract: Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the presence of the second composition gives the mixture a greater hardness than that of the first composition alone. The first composition includes less than about 25 weight percent chromium, less than about 7 weight percent molybdenum, from about 10 to about 35 weight percent nickel, and iron. The second composition is different from the first and is present from about 0.1 weight percent to about 5 weight percent of the mixture.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: August 24, 2010
    Assignees: Boston Scientific Scimed, Inc., CRS Holdings, Inc.
    Inventors: Jonathan S. Stinson, Matthew Cambronne, Richard B. Frank, Richard A. Gleixner, James E. Heilmann
  • Publication number: 20100154939
    Abstract: By focusing on the non-diffusible hydrogen that causes hydrogen embrittlement of austenitic stainless steel, the present invention provides an austenitic stainless steel in which the non-diffusible hydrogen is removed by maintaining the austenitic stainless steel in a vacuum of 0.2 Pa or less and heating at a heating temperature of 200° C. to 500° C. for 460 hours or less to remove the hydrogen (H) contained therein to a level of 0.00007 mass % (0.7 mass ppm) or less.
    Type: Application
    Filed: January 15, 2010
    Publication date: June 24, 2010
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Yukitaka MURAKAMI, Saburo MATSUOKA, Yoji MINE, Toshihiko KANEZAKI
  • Patent number: 7731895
    Abstract: An austenitic stainless steel improved in creep strength, creep ductility, weldability and also hot workability. The steel, consisting of, by mass %, C: 0.05-0.15%, Si: not more than 2%, Mn: 0.1-3%, P: 0.05-0.30%, S: not more than 0.03%, Cr: 15-28%, Ni: 8-55%, Cu: 0-3.0%, Ti: 0.05-0.6%, REM: 0.001-0.5%, sol. Al: 0.001-0.1%, N: not more than 0.03%, and the balance being Fe and incidental impurities. This steel may contain one or more of Mo, W, B, Nb, V, Co, Zr, Hf, Ta, Mg and Ca. It is preferable that REM is Nd.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: June 8, 2010
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Hirokazu Okada, Masaaki Igarashi, Kazuhiro Ogawa, Yasutaka Noguchi
  • Publication number: 20100080921
    Abstract: A target material for thermal spraying may include chromium and at least one of about 0.5-12% by weight of aluminum and about 2-15% by weight of manganese.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Inventor: M. Brad Beardsley
  • Patent number: 7488392
    Abstract: A stainless steel comprising at least 20 weight % of chromium and at least 1.0 weight % of manganese is adapted to support an overcoating having a thickness from 1 to 10 microns of a spinel of the formula MnxCr3?xO4 wherein x is from 0.5 to 2. Preferably the overcoating is on chromia and has stability against chemical reaction at temperatures at least 25° C. higher than the uncoated chromia.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: February 10, 2009
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Leslie Wilfred Benum, Michael C. Oballa, Sabino Steven Anthony Petrone
  • Publication number: 20090017238
    Abstract: A martensitic stainless steel pipe having a heat-affected zone with high resistance to intergranular stress corrosion cracking is provided. In particular, the martensitic stainless steel pipe contains less than 0.0100% of C; less than 0.0100% of N; 10% to 14% of Cr; and 3% to 8% of Ni on a mass basis. Alternatively, the martensitic stainless steel pipe may further contain Si, Mn, P, S, and Al within an appropriate content range. The martensitic stainless steel pipe may further contain one or more selected from the group consisting of 4% or less of Cu, 4% or less of Co, 4% or less of Mo, and 4% or less of W and one or more selected from the group consisting of 0.15% or less of Ti, 0.10% or less of Nb, 0.10% or less of V, 0.10% or less of Zr, 0.20% or less of Hf, and 0.20% or less of Ta on a mass basis. The content Csol defined by the following equation is equal to less than 0.0050%: Csol=C??×Cpre, wherein Cpre=12.0{Ti/47.9+½(Nb/92.9+Zr/91.2)+?(V/50.9+Hf/178.5+Ta/180.9)?N/14.0} or Cpre=0 when Cpre<0.
    Type: Application
    Filed: December 1, 2004
    Publication date: January 15, 2009
    Applicant: JFE Steel Corporation
    Inventors: Yukio Miyata, Mitsuo Kimura, Noritsugu Itakura, Katsumi Masamura
  • Patent number: 7431812
    Abstract: An anode for the electrowinning of aluminium by the electrolysis of alumina in a molten fluoride electrolyte has an electrochemically active integral outside oxide layer obtainable by surface oxidation of a metal alloy which consists of 20 to 60 weight % nickel; 5 to 15 weight % copper; 1.5 to 5 weight % aluminium; 0 to 2 weight % in total of one or more rare earth metals, in particular yttrium; 0 to 2 weight % of further elements, in particular manganese, silicon and carbon; and the balance being iron. The metal alloy of the anode has a copper/nickel weight ratio in the range of 0.1 to 0.5, preferably 0.2 to 0.3.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: October 7, 2008
    Assignee: Moitech Invent S.A.
    Inventors: Thinh T. Nguyen, Vittorio De Nora
  • Patent number: 7381369
    Abstract: Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal element component, wherein a (Ti,Zr) based compound including one or more of S, Se and Te is formed in a matrix metal phase. The free cutting alloy is more excellent in machinability, preserving various characteristics as alloy at similar levels to a conventional case. The effect is especially conspicuous, for example, when a compound expressed in a chemical form of (Ti,Zr)4C2(S,Se,Te)2 as the (Ti,Zr) based compound is formed at least in a dispersed state in the alloy structure.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: June 3, 2008
    Assignees: Daido Tokushuko Kabushiki Kaisha, Tohoku Tokushuko Kabushiki Kaisha, Japan Industrial Technology Association, Tohoku Technoarch Co., Ltd.
    Inventors: Kiyohito Ishida, Katsunari Oikawa, Takashi Ebata, Tetsuya Shimizu, Michio Okabe
  • Patent number: 7101446
    Abstract: An austenitic stainless steel with minimized deformation by heating and cooling treatment after cold working, which consists of, % by mass, C: 0.03% or less, Si: 2 to 4%, Mn: 0.1 to 2%, P: 0.03% or less, S: 0.03% or less, Ni: 9 to 15%, Cr: 15 to 20%, N: 0.02 to 0.2%, Nb: 0.03% or less, each of Mo and Cu or a total of Mo and Cu: 0.2 to 4%, and the balance Fe and impurities, and satisfies the following formulas (1) and (2). This steel can also have good weldability when the following formula (3) is also satisfied in addition to the formulas (1) and (2); 16.9+6.9Ni+12.5Cu?1.3Cr+3.2Mn+9.3Mo?205C?38.5N?6.5Si?120Nb?40??(1) 450?440(C+N)?12.2Si?9.5Mn?13.5Cr?20(Cu+Ni)?18.5Mo??90??(2) 8.2+30(C+N)+0.5Mn+Ni?1.1(1.5Si+Cr+Mo)+2.5Nb??0.8??(3) wherein each element symbol in the formulas (1), (2) and (3) represents the content, % by mass, of each element included in the steel.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: September 5, 2006
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Kiyoko Takeda, Haruhiko Kajimura, Mitsuo Miyahara
  • Patent number: 6939415
    Abstract: An austenitic stainless steel excellect in high temperature strength and creep rupture ducitility which comprises, on the percent by mass basis, C: 0.03-0.12%, Si: 0.2-2%, Mn: 0.1-3%, P: 0.03% or less, S: 0.01% or less, Ni: more than 18% and less than 25%, Cr: more than 22% and less than 30%, Co: 0.04-0.8%, Ti: 0.002% or more and less than 0.01%, Nb: 0.1-1%, V: 0.01-1%, B: more than 0.0005% and 0.2% or less, sol. Al: 0.0005% or more and less than 0.03%, N: 0.1-0.35% and O (Oxygen): 0.001-0.008%, with the balance being Fe and impurities. The austenitic stainless steel may contain a specified amount of one or more element(s) of Mo and W, and/or a specified amount of one or more element(s) of Mg, Zr, Ca, REM, Pd and Hf.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: September 6, 2005
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Atsuro Iseda, Hiroyuki Semba
  • Patent number: 6926778
    Abstract: An austenitic stainless steel suited for ultra supercritical boilers, which consists of C: 0.03-0.12%, Si: 0.1-1%, Mn: 0.1-2%, Cr: not less than 20% but less than 28%, Ni: more than 35% but not more than 50%, W: 4-10%, Ti: 0.01-0.3%, Nb: 0.01-1%, sol. Al: 0.0005-0.04%, B: 0.0005-0.01%, and the balance Fe and impurities; and also characterized by the impurities whose contents are restricted to P: not more than 0.04%, S: not more than 0.010%, Mo: less than 0.5%, N: less than 0.02%, and O (oxygen): not more than 0.005%. Heat resistant pressurized parts excellent in thermal fatigue properties and structural stability at high temperatures, which have a coarse grain whose grain size number is 6 or less, and whose mixed grain ratio is 10% or less.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: August 9, 2005
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Atsuro Iseda, Hiroyuki Semba
  • Patent number: 6918968
    Abstract: An austenitic stainless steel excellent in high temperature strength, high temperature ductility and hot workability, consisting of, by mass %, C: more than 0.05% to 0.15%, Si: 2% or less, Mn: 0.1 to 3%, P: 0.04% or less, S: 0.01% or less, Cr: more than 20% to less than 28%, Ni: more than 15% to 55%, Cu: more than 2% to 6%, Nb: 0.1 to 0.8%, V: 0.02 to 1.5%, sol. Al: 0.001 to 0.1%, but sol.Al?0.4×N, N: more than 0.05% to 0.3% and O (Oxygen): 0.006% or less, but O?1/(60×Cu), and the balance Fe and impurities. The austenitic stainless steel may contain at least one of Co, Mo, W, Ti, B, Zr, Hf, Ta, Re, Ir, Pd, Pt and Ag, and/or at least one of Mg, Ca, Y, La, Ce, Nd and Sc.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: July 19, 2005
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Hiroyuki Semba, Masaaki Igarashi
  • Patent number: 6773660
    Abstract: A hot workable ferric stainless steel alloy resistant to thermal cyclic stress and oxidation at elevated temperatures having improved mechanical properties rendering it especially suitable as a substrate for exhaust gas purifying applications, such as catalytic converters or heating applications, has a composition including (in weight-%): C ≦0.05%; Cr 16.0-24.0%; Ni more than 1.0-15.0%; Al 4.5-12.0%; Mo + W ≦4.0%; Mn ≦1.0%; Si ≦2.0%; Zr + Hf ≦0.1%; REM ≦0.1%; N ≦0.05%; and balance Fe and normally occurring steelmaking impurities and additions.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: August 10, 2004
    Assignee: Sandvik AB
    Inventors: Magnus Cedergren, Kenneth Göransson
  • Patent number: 6652991
    Abstract: The addition of small amounts of CeO2 and Cr to intermetallic compositions of NiAl and FeAl improves ductility, thermal stability, thermal shock resistance, and resistance to oxidation, sulphidization and carburization.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: November 25, 2003
    Assignee: The Governors of the University of Alberta
    Inventors: You Wang, Weixing Chen
  • Patent number: 6623869
    Abstract: A metallic material of the invention which comprises, in mass %, C: not more than 0.2%, Si: 0.01-4%, Mn: 0.05-2%, P: not more than 0.04%, S: not more than 0.015%, Cr: 10-35%, Ni: 30-78%, Al: not less than 0.005% but less than 4.5%, N: 0.005-0.2%, and one or both of Cu: 0.015-3% and Co: 0.015-3%, with the balance substantially being Fe, and of which the value of 40Si+Ni+5Al+40N+10 (Cu+Co), wherein the symbols of elements represent the contents of the respective elements, is not less than 50 and has excellent corrosion resistance in an environment in which metal dusting is ready to occur and, therefore, can be utilized as or in heating furnace pipes, piping systems, heat exchanger pipes and so forth to be used in a petroleum refinery or in petrochemical plants, and can markedly improve the equipment durability and safety.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: September 23, 2003
    Inventors: Yoshitaka Nishiyama, Nobuo Otsuka
  • Patent number: 6391254
    Abstract: An Fe—Cr—Ni alloy for electron gun electrodes comprises: 15 to 20% Cr; 9 to 15% Ni; 0.12% or less C; 0.005 to 1.0% Si; 0.005% to 2.5% Mn; 0.03% or less P; 0.0003 to 0.0100% S; 2.0% or less Mo; 0.001 to 0.2 % Al; 0.003% or less O; 0.1% or less N; 0.1% or less Ti; 0.1% or less Nb; 0.1% or less V; 0.1% or less Zr; 0.05% or less Ca; 0.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: May 21, 2002
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventor: Toshiyuki Ono
  • Patent number: 6379477
    Abstract: An Fe—Cr—Ni alloy for electron gun electrodes, comprises: 15 to 20% Cr; 9 to 15% Ni; 0.12% or less C; 0.005 to 1.0% Si; 0.005 to 2.5% Mn; 0.03% or less P; 0.0003 to 0.0100% S; 2.0% or less Mo; 0.001 to 0.2% Al; 0.003% or less O; 0.1% or less N; 0.1% or less Ti; 0.1% or less Nb; 0.1% or less V; 0.1% or less Zr; 0.05% or less Ca; 0.02% or less Mg by weight; balance Fe; and inevitable impurities. When the alloy is rolled into a sheet with a thickness in the range of 0.1 to 0.7 mm, the surface portion of the sheet includes groups of lining inclusions. The number of groups with widths of 10 &mgr;m or more and less than 20 &mgr;m and with lengths of 20 &mgr;m or more is 20/mm2 or less, and the number of groups with widths of 20 &mgr;m or more and with lengths of 20 &mgr;m or more is 5/mm2 or less.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: April 30, 2002
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventor: Toshiyuki Ono
  • Patent number: 6355212
    Abstract: The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chromium (Cr) 26.0-30%; aluminum (Al) 5.5-13.0%; yttrium (Y) 0.3-1.5%; silicon (Si) 1.5-4.5%; metal from the second main group (magnesium, calcium, barium, strontium) 0.1-2.0%; oxide of the corresponding metal from the second main group 0.1-2.0%; cobalt (Co) remaining percentage. Preferably, tantalum (Ta) is also added in a proportion of 0.5-4.0%, and the remaining percentage of cobalt is replaced by a remaining percentage of Me, Me being understood to mean a metal which may be nickel (Ni) or iron (Fe) or cobalt (Co) or a composition comprising Ni—Fe—Co, Ni—Fe, Ni—Co, Co—Fe.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: March 12, 2002
    Assignee: Turbocoating SpA
    Inventor: Nelso Antolotti
  • Publication number: 20020009382
    Abstract: An improved stainless alloy has application in handling concentrated sulfuric acid. The alloy of the invention preferably comprises 23 to 33% chromium, more than 20% nickel, 6% or more of silicon, 0.2% to 0.4% nitrogen and minor amounts of molybdenum, copper, and tungsten with the balance iron. The alloy offers superior corrosion resistance by comparison with the standard stainless steels over the range from 90% sulfuric acid into the oleum range. The alloy is readily weldable and may be used in either cast or wrought form. After heat treating the alloy acquires a duplex structure which has a mixture of austenite and ferrite phases. The heat-treated alloy is ductile.
    Type: Application
    Filed: April 5, 2001
    Publication date: January 24, 2002
    Inventors: John Rodda, David Hodgson, Gordon Cameron
  • Patent number: 6290905
    Abstract: A welding method for two members adapted to be welded and formed of a low-alloy steel for structural purposes causing the weld metal to develop martensite transformation during cooling after welding, so that the weld metal becomes expanded to a greater degree at room temperature than at a temperature at which the martensite transformation initiates. The welding material comprises a ferrous alloy containing C, Cr, Ni, Si, Mn, Mo and Nb, all of which meet substantially with the contents of the following equation (1): 170≦719−(795×C wt %)−(23.7×Cr wt %)−(26.5×Ni wt %)−(35.55×Si wt %)−(13.25×Mn wt %)−(23.7×Mo wt %)−(11.85×Nb wt %)<250  (1).
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: September 18, 2001
    Assignee: Kawasaki Steel Corporation
    Inventors: Osamu Watanabe, Akihiko Ohta, Chiaki Shiga, Satoshi Nishijima
  • Patent number: 5976275
    Abstract: The present invention aims at providing structural materials having a resistance to degradation by neutron irradiation, causing no SCC in an environment of light-water reactors even after subjecting the materials to neutron irradiation of approximately at least 1.times.10.sup.22 n/cm.sup.2 (E>1 MeV), and having thermal expansion coefficients approximately similar to that of structural materials. The high nickel austenitic stainless steels of the present invention having a resistance to degradation by neutron irradiation can be produced by subjecting stainless steels having compositions (by weight %) of 0.005 to 0.08% of carbon, at most 0.3% of Mn, at most 0.2% of (Si+P+S), 25 to 40% of Ni, 25 to 40% of Cr, at most 3% of Mo or at most 5% of (Mo+W), at most 0.3% of Nb+Ta, at most 0.3% of Ti, at most 0.001% of B and the balance of Fe to a solution-annealing treatment at a temperature of 1000 to 1150.degree. C.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: November 2, 1999
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Toshio Yonezawa, Toshihiko Iwamura, Hiroshi Kanasaki, Koji Fujimoto, Shizuo Nakada, Kazuhide Ajiki, Mitsuhiro Nakamura
  • Patent number: 5948182
    Abstract: A heat resisting steel consists essentially of 0.005-0.20% of C, 0.01-2.0% of Si, 0.1-2.0% of Mn, 20-30% of Ni, 10-20% of Cr, 3.0-4.5% of Ti and 0.1-0.7% of Al with the ratio Ti/Al being 5-20, and the balance being substantially Fe, which is excellent in the tensile properties at the room temperature and 700.degree. C., and the creep rupture properties at the temperature of 700.degree. C.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: September 7, 1999
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Shuji Hamano, Tomotaka Nagashima, Michio Okabe, Toshiharu Noda
  • Patent number: 5882584
    Abstract: An interdental brush wire and an interdental brush which are not buckled or broken, are excellent in durability and manipulation ease due to the springy brush as well as the ability of insertion between teeth characterized in that the wire is a stainless steel wire having a diameter of 0.15 to 0.35 mm and containing nitrogen and a controlled amount of manganese.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Sunstar, Inc.
    Inventor: Naoki Tsurukawa
  • Patent number: 5849420
    Abstract: A punched part consists of an Fe--Cr--Ni alloy essentially consisting of from 15 to 20% of Cr, from 9 to 15% of Ni, from 0.001 to 0.0050% of S, the balance being Fe and unavoidable impurities. The burrs formed during punching are suppressed due to addition of S to the Fe--Cr--Ni alloy.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: December 15, 1998
    Assignee: Nippon Mining & Metals Co., Ltd.
    Inventors: Kiyoaki Nishikawa, Yoshihiro Ozeki, Masazumi Mori