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| Number | Title | Issue Date |
| 7922840 | Method and installation for producing hot-rolled strip from austenitic stainless steels A method for producing hot-rolled strip from austenitic stainless steels. In a first step, a cast product is subjected to a rolling operation in a rolling mill with a finishing train, and, in a second step, a heat treatment is carried out to prevent susceptibility t... | 04/12/2011 |
| 7429302 | Stainless steel sheet for welded structural components and method for making the same A structural hot-rolled or cold-rolled stainless steel sheet having improved intergranular corrosion resistance and toughness at the welding heat affected zone and further having low strength and high elongation. The composition of the steel sheet contains less than... | 09/30/2008 |
| 7416619 | Application of an alloy in kitchen utensil products The present invention relates to new kitchen utensils, in particular relates to an application of a material in kitchen utensils. The present invention solves the problems of long-term presence in the field. SUS436L is used for kitchen utensils. SUS436L chemical com... | 08/26/2008 |
| 7396421 | Duplex stainless steel and manufacturing method thereof A duplex stainless steel containing C, Si, Mn, P, S, Al, Ni, Cr, Mo, N (nitrogen, O (oxygen), Ca, Mg, Cu, B, and W, and the balance Fe and impurities, where a number of oxide-based inclusions, which have a total content of Ca and Mg of 20 to 40% by mass and also hav... | 07/08/2008 |
| 7361235 | Method for producing dispersed oxide reinforced ferritic steel having coarse grain structure and being excellent in high temperature creep strength A method of manufacturing an oxide dispersion strengthened ferritic steel excellent in high-temperature creep strength having a coarse grain structure. The method comprises mixing alloy powders and an Y2O3 powder, subjecting the mixed powder to... | 04/22/2008 |
| 7294212 | High-strength stainless steel material in the form of a wheel rim and method for manufacturing the same Material for stainless steel sheets is heated to a temperature within a range of 850 to 1250° C. and cooled at a rate 1° C./s or faster, the material including 0.02% by mass or less of C, 1.0% by mass or less of Si, 2.0% by mass or less of Mn, 0.04% by mass or les... | 11/13/2007 |
| 7273584 | Method of manufacturing oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains An oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains can be manufactured by a method comprising mixing either element powders or alloy powders and a Y2O3 powder; subjecting the resu... | 09/25/2007 |
| 7157672 | Method of manufacturing stainless steel pipe for use in piping systems A welded low carbon dual phase (ferrite plus martensite) and/or low carbon martensitic stainless steel PIPE having requisite yield strength and corrosion and/or erosion resistance is shown. Pipe can be manufactured up to a maximum outside diameter from finished plat... | 01/02/2007 |
| 7147726 | Mechanical method for generating nanostructures and mechanical device for generating nanostructures The present invention concerns a mechanical method for generating nanostructures in order to obtain on a surface of a metal piece a nanostructured layer of defined thickness. A quantity of perfectly spherical balls (22) are disposed in a chamber that is close... | 12/12/2006 |
| 7141209 | Method for producing oxide dispersion strengthened ferritic steel tube There is provided a method for producing oxide dispersion strengthened ferritic steel tube by fabricating a raw tube by mixed sintering of a metal powder and an oxide powder and producing a tube of the desired shape by repeating cold rolling and heat treatment for a... | 11/28/2006 |
| 6939419 | Method for producing axially symmetric parts and the article The invention relates to plastic metal working, more specifically to methods for producing parts of the disk- or shell-type having conical, hemispherical, and also combined parts, such as disk-and-shaft ones. The invention is instrumental in producing large axially ... | 09/06/2005 |
| 6896747 | Austenitic alloy for heat strength with improved pouring and manufacturing, process for manufacturing billets and wire Austenitic alloy for high-temperature strength with improved pourability and manufacturing, of which the composition comprises, in weight-%: 0.010% | 05/24/2005 |
| 6893727 | Metal gasket and a material for its manufacture and a method for their manufacture This invention relates to a stainless steel gasket having markedly improved strength and fatigue properties due to precipitation strengthening. Its composition comprises C: at most 0.03%, Si: at most 1.0%, Mn: at most 2%, Cr: 16.0%-18.0%, Ni: 6.0%-8.0%, N: at most 0... | 05/17/2005 |
| 6855213 | Non-ridging ferritic chromium alloyed steel A ferritic non-ridging stainless steel and process therefor. A chromium alloyed steel melt containing sufficient titanium and nitrogen but a controlled amount of aluminum is cast into an ingot or continuously cast into a strip or a slab having an as-cast fine equiax... | 02/15/2005 |
| 6478900 | Method of forging precipitation hardening type stainless steel An improved method of forging a precipitation hardening type stainless steel. The method comprises the steps of soaking the precipitation hardening type stainless steel at a temperature of austenitizing range, cooling the steel to a temperature in the ran... | 11/12/2002 |
| 6423160 | Stainless steel plate for shadow mask method for production thereof and shadow mask A stainless steel plate for a shadow mask, comprising 9 to 20 weight % of chromium (Cr), 0.15 weight % or less of carbon (C), 0 to 1.0 weight % of manganese (Mn), 0 to 0.2 weight % of titanium (Ti), 0 to 1.0 weight % of silica (Si), and 0 to 1.0 weight % ... | 07/23/2002 |
| 6419770 | Cold-warm working and heat treatment method of high carbon-high alloy group steel The high carbon stainless steel containing more than 0.5 mass % carbon and more than 8 mass % chromium, or the tool steel containing more than 0.5 mass % carbon and more than 0.5 mass % at least one of carbide producing metal elements including chromium, ... | 07/16/2002 |
| 6391253 | Stainless steel having excellent antibacterial property and method for producing the same The present invention provides a stainless steel being excellent in workability, corrosion resistance and antibacterial property. To be more specific, a stainless steel containing 10 wt % or more of Cr is rendered to contain 0.0001-1 wt % of Ag, or furthe... | 05/21/2002 |
| 6329081 | Stainless steel sheet material and manufacturing method thereof There is provided a stainless steel sheet material, used for a semiconductor manufacturing device, to which it difficult for fine dust to be attached and from the surface of which the attaching dust can be easily washed away. Also, there is provided a met... | 12/11/2001 |
| 6306230 | Process for the production of hardened parts of steel A method for producing hardened parts of steel from an air-hardening steel comprising the steps of heating the steel is heated to a temperature above 1,100° C., hot-working the steel parts until they reach the A1 emperature, cooling the steel ... | 10/23/2001 |
| 6217679 | Method for producing chromium-containing hot rolled steel strip The invention provides hot-rolled steel strips which, after having been acid-pickled, can be directly used. The strips have no Cr-decreasing layer and no shot blasted marks on their surface and have good corrosion resistance. The invention also provides a... | 04/17/2001 |
| 6203632 | Oxidation-resistant metal foil, its use and method for its production The invention relates to iron-chromium aluminum metal foil which is resistant to high-temperature oxidation. Said metal foil is produced by hot-dip aluminizing an iron-chromium support band with an aluminum-silicon alloy. The foil has the following compos... | 03/20/2001 |
| 6193469 | High toughness heat-resistant steel, turbine rotor and method of producing the same A high toughness heat-resistant steel, a turbine rotor formed of this steel and a method of producing the turbine rotor are described. The heat-resistant steel has a composition consisting essentially of: 0.05 to 0.30 wt % C, 0 to 0.20 wt % Si, 0 to 1.0 w... | 02/27/2001 |
| 6113710 | Ferritic stainless steel plate excellent in deep drawability and anti-ridging property and production method thereof The present invention provides a ferritic stainless steel plate improved in the deep drawability and the anti-ridging property at deep drawing work and the production technique thereof. The practical construction of the present invention is a ferritic sta... | 09/05/2000 |
| 6110421 | High strength non-magnetic stainless steel and method for producing the same A non-magnetic stainless steel, which contains stably a large amount of N, is excellent in the corrosion resistance and the strength and possible to obtain sound ingots and products, consists by weight percentage of Cࣘ0.08%, Siࣘ0.50%, 13%ࣘMnࣘ16%, ... | 08/29/2000 |
| 5986205 | Stainless steel sheet and a substrate for a solar cell and manufacturing method thereof The stainless steel sheet useful as a substrate for non-single crystalline semiconductor solar cells has minute ripples with undulations along a rolling direction, and its surface roughness is controlled in the range of Rz 0.3-1.4 μm and R | 11/16/1999 |
| 5976282 | Method for producing austenitic steel plate with excellent surface brightness and corrosion resistance An austenite stainless steel plate having both excellent surface brightness and superior corrosion resistance, without polishing after finish annealing and pickling for descaling of the strip. The steel plate contains Si 0.02 to 0.2 wt % together with Si ... | 11/02/1999 |
| 5868875 | Non-ridging ferritic chromium alloyed steel and method of making A ferritic non-ridging stainless steel and process therefor. A chromium alloyed steel melt is deoxidized with a sub-equilibrium amount of titanium and nitrogen and continuously cast into a strip or a slab or cast into an ingot having an as-cast fine equia... | 02/09/1999 |
| 5849116 | Production method for steel material and steel pipe having excellent corrosion resistance and weldability A steel material and a steel pipe each exhibiting an excellent corrosion resistance in an environment containing a wet carbon dioxide and a small amount of hydrogen sulfide are produced at low cost and with high productivity, a steel slab which contains, ... | 12/15/1998 |
| 5824264 | High-temperature stainless steel and method for its production A high-temperature austenitic stainless steel having improved weldability is disclosed. The steel consists essentially, by weight, of: C: 0.05%-0.15%, Si: less than 1.0%, Mn: 2.0% or less, P: 0.04% or less, S: 0.01% or less, Cr: 20%-30%, Ni: 10%-15%, N: 0.10%-0.30%... | 10/20/1998 |
| 5779820 | Process for producing a ferritic stainless steel having an improved corrosion resistance, especially resistance to intergranular and pitting corrosion The present invention relates to a process for producing a ferritic stainless steel having an improved corrosion resistance, and especially resistance to intergranular corrosion and to pitting corrosion. The steel is subjected, in a first phase, to coolin... | 07/14/1998 |
| 5733387 | Duplex stainless steel, and its manufacturing method A duplex stainless steel consisting of a ferrite phase and an austenite phase is disclosed which is superior in the hot ductility, the high temperature oxidation resistance, the corrosion resistance and the impact toughness. The duplex stainless steel is ... | 03/31/1998 |
| 5626694 | Process for the production of stainless steel sheets having an excellent corrosion resistance This invention relates to a process for the production of stainless steel sheets and proposes a process for the production of stainless steel sheets having a more excellent corrosion resistance as compared with the conventional one without trimming the st... | 05/06/1997 |
| 5565167 | Stainless steel excellent in fused-salt corrosion resistance and method of producing the same A stainless steel excellent in fused-salt corrosion resistance having a composition specified in weight per cent including not more than 0.1% of C, not more than 2.0% of Mn, not less than 7.5% and less than 15.0% of Ni, 14.0-20.0% of Cr, more than 0.2% an... | 10/15/1996 |
| 5492575 | Process for producing thin strip of Cr-stainless steel having high toughness To produce a thin strip having a high cast strip toughness from a thin cast strip of a Cr-stainless steel containing Nb, Ti, and Al in an amount of 0.05% or more, a process includes the steps of: casting a thin cast strip of a Cr-stainless steel having a ... | 02/20/1996 |
| 5462615 | Weldable high-strength structural steel with 13% chromium Disclosed is a process for producing seamless steel pipes or flat products (strip or sheet) for pipes or vessels which are intended for the conveyance, transport or processing of gaseous or liquid hydrocarbons containing CO2 and water and possi... | 10/31/1995 |
| 5340415 | Ferritic stainless steel plates and foils and method for their production A heat-resistant ferritic stainless steel plate or foil having improved toughness as well as workability is disclosed, which consists essentially of: C: not larger than 0.020%, N: not larger than 0.020%, wherein, C(%)+N(%): not larger than 0.030%, Si: not larg... | 08/23/1994 |
| 5327634 | Process for improving elasticity of the edge of a ski Process for improving the elasticity of a ski edge made of corrosion-resistant martensitic chrome steel, consisting of pre-stretching the edge, and for the manufacture of a ski incorporating edges so produced.... | 07/12/1994 |
| 5269856 | Process for producing high strength endless steel belt having a duplex structure of austenite and martesite A high strength steel belt having an excellent flatness and a duplex structure of austenite and martensite has been prepared by a process which comprises providing a cold rolled or cold rolled and annealed strip of a martensitic structure from low carbon ... | 12/14/1993 |
| 5232520 | High-strength martensitic stainless steel having superior fatigue properties in corrosive and erosive environment and method of producing the same A high strength martensitic stainless steel having superior anti-fatigue characteristics when used in a corrosive or erosive environment. The steel has a proof strength of 80 to 110 kg/mm2 and a composition containing specified amounts of carbo... | 08/03/1993 |
