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7608156 |
High strength cold rolled steel sheet and method for manufacturing the same
This disclosure relates to a high strength cold rolled steel sheet composed of ferrite grains having an average grain diameter of 10 μm or less, in which the average number per unit area of Nb(C,...
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7559997 |
High-strength cold rolled steel sheet and process for producing the same
The invention provides a high strength cold rolled steel sheet comprising ferrite phases and second phases, in which the mean grain size of the ferrite phases is 20 μm or less, the volume fraction...
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7540928 |
Process for manufacturing bake hardening steel sheet, and steel sheet and parts thus obtained
The invention concerns a method for making hardenable steel plates by firing comprising: preparing a steel whereof the composition comprises, expressed in weight percent: 0.03=C=0.06, 0.50=Mn=1.10,...
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7531053 |
Fuel cell produced using a metallic material and its method of making
An inexpensive metallic material for interconnects of solid-oxide fuel cells, a fuel cell using the metallic material, and a method for producing the metallic material having excellent oxidation...
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7481897 |
Method of producing a cold temperature high toughness structural steel
An apparatus includes a low-carbon steel member. The low-carbon steel member yields plastically more than about 5% before fracturing at temperatures down to about −40° C. when stress is applied...
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7459039 |
Method for forming carbide banding in steel materials using deformation
The method of making steel with carbide banding entails using steel with undissolved carbides distributed within the steel for forming steel with carbide banding, wherein the steel is about 0.3...
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7459038 |
Method for making steel with carbides already in the steel using material removal and deformation
The invention is method of making steel with carbide banding obtaining steel with undissolved carbides distributed within the steel for forming steel with carbide banding, wherein the steel is...
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7455736 |
High tensile strength steel sheet excellent in processibility and process for manufacturing the same
A high tensile strength steel sheet excellent in processibility which can satisfy a strength, a total elongation, and stretch-flanging property (hole enlarging rate) at a further high level. and...
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7442268 |
Method of manufacturing cold rolled dual-phase steel sheet
A steel sheet having (a) a dual phase microstructure with a martensite phase and a ferrite phase and (b) a composition containing by percent weight: 0.01% to 0.2% C; 0.3% to 3% Mn; 0.05% to 2% Si;...
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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...
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7425240 |
Method for the production of a siderurgical product made of carbon steel with a high copper content
The invention relates to a method for producing a siderurgical product made of carbon steel having a high copper content, according to which: —a liquid steel having the composition: 0.0005%≦1%;...
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7399372 |
Method for manufacturing metallic bellows
A metallic bellows, composed of precipitation hardening stainless steel, includes ridge portions and valley portions formed alternately and continuously, an average grain size of 10 to 15 μm, and...
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7393420 |
Steel tube for bearing element parts and method of manufacturing as well as machining the same
Steel tubes for bearing element parts according to the present invention, wherein the specific compositions are limited and an accumulation intensity of {211} face along with an impact property at...
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7361237 |
High-strength isotropic steel, method for making steel plates and resulting plates
A steel having a composition, expressed in wt. %, of: 0.03≦C≦0.06; 0.50≦Mn≦1.10; 0.08≦Si≦0.20; 0.015≦Al≦0.070; N≦0.007; Ni≦0.040; Cu≦0.040; P≦0.035; S≦0.015; Mo≦0.008;...
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7252724 |
High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the same
A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is...
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7201812 |
Method for manufacturing seamless steel tube
A method for manufacturing a seamless steel tube, wherein a tubing material for the seamless steel tube is produced by a hot working process from a material having less workability, such as a high...
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7147730 |
High carbon steel and production method thereof
To provide a high carbon steel sheet having excellent hardenability and toughness, and low planar anisotropy of tensile properties affecting workability, and a method of producing the same. A high...
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7090731 |
High strength steel sheet having excellent formability and method for production thereof
A high strength steel sheet having (2-1) a base phase structure, the base phase structure being tempered martensite or tempered bainite and accounting for 50% or more in terms of a space factor...
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7067023 |
Cold rolled steel sheet and galvanized steel sheet having strain age hardenability and method of producing the same
An object of the present invention is to provide a cold-rolled steel sheet and an alloyed hot-dip galvanized steel sheet in which tensile strength is effectively increased by press forming and heat...
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7056398 |
Method of making ferritic stainless steel sheet having excellent deep-drawability and brittle resistance to secondary processing
A ferritic stainless steel sheet contains abut 0.01 percent by mass or less of carbon; about 1.0 percent by mass or less of silicon; about 1.5 percent by mass or less of manganese; about 11 to...
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7025838 |
Ferritic stainless steel sheet with excellent workability and method for making the same
A ferritic stainless steel sheet for use in automobile fuel tanks and fuel pipes having smooth surface and resistance to organic acid is provided. The sheet contains, by mass, not more than about...
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7008488 |
High-strength steel sheet having excellent workability and production process therefor
A high-strength steel sheet comprises carbon: 0.06 to 0.25 mass %, Si: 0.5 to 3.5 mass % and Mn: 0.7 to 4 mass %. Its mother structure is ferrite, its second phase structure comprises martensite...
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6962631 |
Steel plate excellent in shape freezing property and method for production thereof
A ferritic steel sheet wherein a mean value of X-ray random intensity ratios of a group of {100}<011> to {223}<110> orientations is 3.0 or more and a mean value of X-ray random...
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6946041 |
Material for shadow mask, method for production thereof, shadow mask and image receiving tube
A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %,...
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6936119 |
Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference
The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting...
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6858099 |
Steel material production method
A method for producing a steel material having a high fatigue strength and given a uniform residual stress by a rapid treatment. A marageing steel is subjected to a cold plastic working to have a...
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6852180 |
Method for making carbon steel bands, in particular packaging steel bands, and resulting bands
The invention relates to the iron and steel industry. More specifically, the invention describes the manufacture of steel strip intended to be converted into thin packaging, such as for drinks and...
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6841014 |
Method for manufacturing a striking plate of a golf club head
A method for manufacturing a striking plate of a golf club head includes the steps of soft heat-treating a flat metal blank to increase its malleability, stamping out a striking plate with an...
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6793745 |
Maraging type spring steel
The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to...
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6777863 |
Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube
A material is provided for marking aperture grilles for use in a color picture tube which has excellent yield strength, high temperature creep strength, and superior magnetic characteristics as...
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6767415 |
Process for producing a thin sheet of ultra-low-carbon steel for the manufacture of drawn products for packaging and thin sheet obtained
A killed and vacuum-degassed very-low-carbon steel containing, by weight, between 0.10 and 0.35% manganese, less than 0.006% nitrogen, less than 0.025% phosphorus, less than 0.020% sulphur, less...
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6764647 |
Corrosion resistant material
A material which is suitable for equipment in oilfield technology and a process for making the material. The material consist essentially of C, Si, Mn, Cr, Mo, Ni, Cu, N in certain weight...
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6749701 |
Method of inhibiting cold-rolled steel sheet edge cracking, and method of producing the steel sheet
A high-strength, high-toughness martensitic stainless steel sheet has a chemical composition comprising, in mass percent, more than 0.03 to 0.15% of C, 0.2-2.0% of Si, not more than 1.0% of Mn, not...
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6749696 |
Process for producing a cold-rolled strip or sheet of steel and strip or sheet which can be produced by the process
The production of a cold-rolled strip or sheet of steel with good deforming properties, which is subjected to recrystallizing annealing and, if appropriate, a dressing operation after hot rolling,...
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6743306 |
Steel sheet and method for manufacturing the same
The steel sheet comprises: a ferritic phase having ferritic grains of 10 or more grain size number and ferritic grain boundaries; and at least one kind of Nb precipitates and Ti precipitates. The...
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6706419 |
Cold-rolled steel sheet or hot-rolled steel sheet excellent in painting bake hardenability and anti aging property at room temperature, and method of producing the same
To provide a steel sheet excellent in painting bake hardenability and anti aging property at room temperature: containing, in mass, 0.0001 to 0.20% of C, 2.0% or less of Si, 3.0% or less of Mn,...
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6688148 |
Manufacturing process for making engine components of high carbon content steel using cold forming techniques
A method of making high carbon content steel engine components is disclosed. The method includes pre-processing a supply wire of high strength steel having a spheroidized carbide microstructure and...
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6673171 |
Medium carbon steel sheet and strip having enhanced uniform elongation and method for production thereof
A method is provided for producing medium carbon steel sheet and strip with enhanced uniform elongation for deep drawing applications. In one embodiment, a steel slab containing carbon 0.30/0.70%,...
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6660109 |
Method of manufacturing aluminide sheet by thermomechanical processing of aluminide powders
A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into...
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6645324 |
Method of manufacturing a ferritic stainless steel plate
A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling...
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6641681 |
Steel material and its manufacture
The invention concerns a steel material which consists of a steel having the following chemical composition in weigh-%: 1.0-1.9 C, 0.5-2.0 Si, 0.1-1.5 Mn, 4.0-5.5 Cr, 2.5-4.0 (Mo+W/2), however max...
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6641931 |
Method of production of cold-rolled metal coated steel products, and the products obtained, having a low yield ratio
The present invention aims to produce a cold rolled metal coated multi-phase steel, characterized by a tensile strength of at least 500 MPa, a yield ratio (Re/Rm) lower than 0.65 in skinned...
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6641682 |
Method for manufacturing an aperture grill material for color picture tube
An aperture grill material for a color picture tube having excellent tensile strength and high-temperature creep characteristics and magnetic characteristics superior to existing materials, a...
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6635127 |
Steel strapping and method of making
Steel strapping and a method of manufacturing steel strapping are disclosed. The steel strapping has the following composition in wt % and a microstructure including a matrix of recovery-annealed...
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6613166 |
Method for producing brake disks for motor vehicles
The proposed brake disk consists of steel of a composition of 0.1 to 0.4% of carbon, up to 1.0% of silicon, up to 2.0% of manganese, up to 0.02% of sulfur, 11 to 16% of chromium, up to 1.0% of...
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6605166 |
Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation
A high-strength bolt having excellent delayed fracture resistance and stress relaxation resistance in addition to a tensile strength of 1200 N/mm 2 or higher is disclosed. A steel material for the...
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6596101 |
High performance nanostructured materials and methods of making the same
Preferred embodiments of the invention provide new nanostructured materials and methods for preparing nanostructured materials having increased tensile strength and ductility, increased hardness,...
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6554925 |
Method for manufacturing cold-rolled steel sheet
The method for manufacturing cold-rolled steel sheet comprises the steps of: rough-rolling a slab using a rough-rolling unit; finish-rolling the sheet bar using a continuous hot finishing-rolling...
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6537398 |
Method for manufacturing of strips of stainless steel and integrated rolling mill line
A strip of stainless steel, which is cast and/or hot rolled and which is dark colored by oxides on the surface of the strip, remaining from the foregoing manufacture of said cast and/or hot rolled...
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6531039 |
Anode for plating a semiconductor wafer
An anode for use in electroplating semiconductor wafers, comprising a metal plate formed from a generally continuous casting process that is essentially free of voids or cracks, the casting being...
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