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WO/2023/148087A1 |
The invention relates to a method of manufacturing a low-carbon steel strip having improved formability, the method comprising the steps of: providing a hot-rolled steel strip of a low- carbon steel composition comprising up to about 0.0...
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WO/2023/149157A1 |
Provided is a thick steel sheet of high strength and excellent multi-pass welded joint CTOD characteristics, even having a thickness exceeding100 mm. A steel sheet with a prescribed component composition and Ti/N, Ceq, and Pcm values in ...
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WO/2023/143290A1 |
Disclosed is a pipeline. The pipeline has, in the thickness direction, a corrosion-resistant layer and a base layer. The corrosion-resistant layer is at least located on an inner wall of the pipeline, and the corrosion-resistant layer, i...
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WO/2023/144019A1 |
The invention relates to a hot-rolled high-strength steel strip having a composition consisting of, in wt.%, 0.02 – 0.13% C, 1.20 – 3.50% Mn; 0.10 – 1.00% Si; 0.05 – 1.0% Mo; 0.02 – 0.70% Al, 0.04 – 0.25% Ti, up to 0.010% N, ...
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WO/2023/145346A1 |
Provided is a high-strength seamless stainless steel pipe for oil wells. The seamless stainless steel pipe according to the present invention has a component composition that contains, expressed in mass%, C : not more than 0.015%, Si : 0...
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WO/2023/145423A1 |
Provided is a method for manufacturing an austenitic alloy steel material with which it is possible to improve mechanical properties even without improving the steel composition and to expect an increase in the service life of a componen...
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WO/2023/145838A1 |
Provided is a component that is made of so-called untempered steel that has not been tempered after hot forging, and, in particular, untempered steel that has a bainitic structure, the component having a high yield ratio, and, specifical...
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WO/2023/137842A1 |
A die steel having a high thermal diffusion coefficient, and a preparation method therefor. The die steel is prepared from the following components, in percentage by mass: C: 0.30-0.40%, Si: 0.05-0.10%, Mo: 2.50-3.40%, Nb: 0.01-0.05%, Co...
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WO/2023/140363A1 |
This grain-oriented electrical steel sheet has, along a steel sheet surface, a rolling direction and a sheet width direction orthogonal to the rolling direction, wherein: the rolling direction coincides with a direction of easy magnetiza...
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WO/2023/134616A1 |
Disclosed is a pipeline, having a corrosion resistant layer and a base layer in a thickness direction. The corrosion resistant layer is at least located on the inner wall of the pipeline. In addition to Fe and inevitable impurities, the ...
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WO/2023/135550A1 |
The present disclosure provides a method (100) of manufacturing the a cold rolled low carbon micro-alloyed steel having excellent deep drawing and hydroforming characteristics comprising the following composition expressed in weight %: C...
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WO/2023/131224A1 |
Disclosed in the present invention is a non-oriented electrical steel plate with good magnetic performance. In addition to Fe and inevitable impurities, the non-oriented electrical steel plate further contains the following chemical elem...
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WO/2023/132251A1 |
The present invention proposes an oriented electromagnetic steel sheet in which the magnetic domain structure is controlled and iron loss is reduced, wherein an iron loss reduction effect can be maintained even when stress relief anneali...
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WO/2023/132342A1 |
A hot-rolled steel sheet according to the present invention has a specific chemical composition, while having a metal structure that contains, in area%, 25.0% or more of bainite, a total of 70.0% or less of fresh martensite and tempered ...
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WO/2023/132351A1 |
A hot-rolled steel sheet according to the present invention has a specific chemical composition, while having a metal structure that contains, in area%, 25.0% to 96.0% of bainite, 70.0% or less of martensite, 4.0% to 12.0% of residual au...
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WO/2023/132244A1 |
Provided is a welded joint comprising stacked multiple steel plates, a spot-welded section having a nugget for joining the multiple steel plates together as well as a press-contact portion and a heat-affected zone which are formed around...
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WO/2023/132241A1 |
Provided is a welded joint characterized by comprising a plurality of stacked steel sheets, nuggets joining the plurality of steel sheets, and a spot welded section having pressure welded sections and heat affected sections formed around...
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WO/2023/132197A1 |
The present invention achieves both a reduction in iron loss and an increase in magnetic flux density of an Si-gradient magnetic material. The present invention is a multi-layered electromagnetic steel sheet having a laminated structure ...
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WO/2023/132198A1 |
The present invention achieves low iron loss and high magnetic flux density in a Si-gradient magnetic material. A multilayered electromagnetic steel sheet having a layered structure of an inner layer section and surface layer sections th...
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WO/2023/132339A1 |
Provided is an Fe-Cr-Ni alloy material having high strength and decreased strength anisotropy. This Fe-Cr-Ni alloy material comprises, in % by mass, C: 0.030% or less, Si: 0.01-1.00%, Mn: 0.01-2.00%, P: 0.030% or less, S: 0.0050% or less...
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WO/2023/132254A1 |
This hot-rolled steel sheet has a prescribed chemical composition. The metal structure at a position of 1/4 of the sheet thickness and at a position 100 μm from the surface is such that by area, one or more of martensite and tempered ma...
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WO/2023/126507A1 |
The invention relates to a heavy plate and a thermomechanical handling method for a starting material, in particular a slab, for the production of the heavy plate consisting of a steel alloy. Optimum toughness values and yield ratio Rp0,...
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WO/2023/129793A1 |
A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. The non-pneumatic tire further in...
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WO/2023/129259A1 |
A high permeability grain oriented electrical steel having a chemistry comprising, all in weight percent, 2.5% to 4.5% silicon, 0.02% to 0.08% carbon, 0.01 to 0.05% aluminum, 0.005% to 0.050% sulfur or selenium, 0.02 to 0.20% manganese, ...
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WO/2023/126074A1 |
The present invention relates to a method for manufacturing lamellas (20) from sheet metal (30) for a stack of such lamellas (20), i.e. a lamination, such as the core of a transformer or of a rotor or a stator of an electric machine. Acc...
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WO/2023/126506A1 |
The invention relates to a heavy plate and a thermomechanical handling method for a starting material, in particular a slab, for the production of the heavy plate consisting of a steel alloy. According to the invention, in order to be ab...
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WO/2023/121266A1 |
A double oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, at least 2.0% of Si, more than 0% and 0.02% or less of Al, 0.02-0.50% of Mn, more than 0% and 0.004% or less of C, and 0.0005-...
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WO/2023/121032A1 |
The present invention pertains to a steel plate and a method for manufacturing same. More specifically, the present invention pertains to a steel plate having high strength and excellent impact toughness after deformation, and a method f...
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WO/2023/121267A1 |
A non-directional electrical steel sheet according to an embodiment of the present invention comprises: by weight%, 2.5 to 4.5% of Si; 0.04 to 1.4% of Mn; 0.2 to 1.1% of Al; 0.0005 to 0.003% of Bi: 0.0005 to 0.003% of Zr; 0.0005 to 0.004...
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WO/2023/121200A1 |
A method for manufacturing a non-oriented electrical steel sheet according to one embodiment of the present invention comprises: a step of manufacturing a slab in a steelmaking process by inputting, in weight %, In: 0.0005-0.015%, Sn: 0....
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WO/2023/121293A1 |
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises, in wt%, 2.0 to 6.5% of Si, 0.1 to 1.3% of Al, 0.3 to 2.0% of Mn, and the remainder in Fe and unavoidable impurities, and the area fract...
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WO/2023/121220A1 |
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises, in weight %, 0.005% or less (excluding 0%) of C, 1.5-3.0% of Si, 0.4-1.5% of Mn, 0.005% or less (excluding 0%) of S, 0.0001-0.7% of Al,...
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WO/2023/121187A1 |
The present invention relates to a steel sheet for use in automobiles, etc., and to a steel sheet that has high strength and high formability and is superb in terms of spot weldability, and a manufacturing method therefor.
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WO/2023/121274A1 |
A grain oriented electrical steel sheet according to an embodiment of the present invention comprises: a grain oriented electrical steel sheet substrate; and a metal oxide layer disposed on both sides of the grain oriented electrical ste...
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WO/2023/121133A1 |
The present specification discloses: a steel plate for an exhaust system steel pipe, wherein the steel plate is economical and improved in terms of corrosion resistance and formability by controlling the alloy components and production m...
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WO/2023/121308A1 |
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises: a steel sheet base material comprising, by wt%, 1.0-6.5% of Si, 0.1-1.3% of Al, 0.3-2.0% of Mn and the balance of Fe and inevitable imp...
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WO/2023/121040A1 |
A method for manufacturing a grain-oriented electrical steel sheet, according to one embodiment of the present invention, comprises the steps of: hot rolling a slab so as to manufacture a hot rolled sheet, the slab comprising, by wt%, 2....
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WO/2023/121194A1 |
A cold-rolled steel sheet having improved strength and elongation, according to one embodiment of the present invention, comprises, in weight%: 0.04-0.08% of C; 0.05% or less (excluding 0%) of Si; 0.1-0.6% of Mn; 0.02-0.06% of Al; 0.015%...
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WO/2023/121181A1 |
An aspect of the present invention may provide: a hot-rolled steel sheet that is excellent in terms of yield strength, vibration damping ratio, weldability, and weld site-low temperature toughness and thus has physical properties suitabl...
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WO/2023/121253A1 |
A grain-oriented electrical steel sheet according to one embodiment of the present invention comprises a plurality of line-shaped deformation parts formed in the rolling direction, and at least two regions, in which intervals between the...
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WO/2023/120985A1 |
The present invention relates to: a steel material for hot forming, used for a vehicle, etc.; a hot formed part; and a method for manufacturing thereof.
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WO/2023/121256A1 |
A non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 2.5-4.0% of Si, 0.1-1.5% of Al, and 0.1-1.5% of Mn, with the remainder comprising Fe and inevitable impurities. The non-oriented ...
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WO/2023/121295A1 |
A non-oriented electrical steel sheet according to an embodiment of the present invention comprises: a steel sheet base material containing, in wt%, 2.0-6.5% of Si, 0.1-1.3% of Al, 0.3-2.0% of Mn, and 0.005-0.06% of Cr, with the remainde...
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WO/2023/121191A1 |
This non-oriented electrical steel sheet comprises: 3.0-4.0 weight% of Si; 0.1-1.5 weight% of Al; 0.1-0.5 weight% of Mn; 2-20 weight% of Cr with respect to the content of Mn; 0.006-0.1 weight% of a sum of Sn and Sb; 0.0010-0.0050 weight%...
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WO/2023/118350A1 |
The invention relates to a high strength steel strip or sheet excellent in ductility and bendability. The invention also relates to a method for producing such steel strip or sheet.
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WO/2023/121294A1 |
A non-oriented electrical steel sheet according to one embodiment of the present invention comprises a steel sheet base material and an insulation film positioned on the steel sheet base material, satisfies the following formula 2 before...
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WO/2023/121201A1 |
The present invention relates to a grain-oriented electrical steel sheet and a manufacturing method therefor. The grain-oriented electrical steel sheet according to one embodiment of the present invention may comprise, in wt%, 2.0 to 6.0...
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WO/2023/121273A1 |
A manufacturing method of a grain oriented electrical steel sheet according to one embodiment of the present invention comprises: a step of manufacturing a hot-rolled steel sheet by hot-rolling a slab; a step of hot-rolled sheet annealin...
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WO/2023/121039A1 |
A steel sheet for enamel according to an embodiment of the present invention comprises, in wt%, C: 0.001 to 0.08%, Mn: 0.05 to 0.40%, Si: 0.001 to 0.03%, Al: 0.005 to 0.020%, P: 0.001 to 0.020%, S: 0.001 to 0.020%, Cu: 0.03 to 0.08%, N: ...
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WO/2023/121221A1 |
According to one aspect of the present invention, an austenitic high-manganese steel having excellent ultra-low temperature toughness in a weld heat-affected zone, and a manufacturing method therefor can be provided.
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