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WO/2021/238917A1 |
Disclosed is a cold-rolled and annealed dual-phase steel having a tensile strength of greater than 780 MPa. A matrix structure thereof is fine and uniform martensite + ferrite. The cold-rolled and annealed dual-phase steel contains the f...
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WO/2021/238895A1 |
Disclosed is a low-cost non-oriented electrical steel plate with an extremely low aluminum content, which plate comprises the following chemical elements in percentage by mass: C: ≤ 0.003%, Si: 0.1%-1.2%, Mn: 0.1%-0.4%, P: 0.01%-0.2%, ...
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WO/2021/241605A1 |
The present invention provides a wear resistant steel sheet which has both excellent wear resistance and excellent bending workability over a wide width. A wear resistant steel sheet which has a predetermined component composition, where...
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WO/2021/235498A1 |
The present invention presents a method that can, regardless of the properties of a steel sheet, prevent the kinking and/or crushing of the steel sheet which has been rolled up in a coil shape. The method is for determining the pattern...
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WO/2021/235094A1 |
Provided is a grain-oriented electromagnetic steel sheet which has undergone a heat-resistant magnetic domain refinement treatment that makes it possible to effectively prevent the occurrence of carburizing or nitriding during strain rel...
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WO/2021/233247A1 |
Disclosed in the present invention are cold-rolled enamel steel for deep drawing an inner container and a manufacturing method therefor. The cold-rolled enamel steel comprises the following chemical elements in percentage by mass: 0.02-0...
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WO/2021/232275A1 |
A hot-work die steel and a preparation method therefor. The hot-work die steel has the following chemical composition in mass percent: 0.20-0.32 wt% of C, Si ≤0.5 wt%, Mn ≤0.5 wt%, 1.5-2.8 wt% of Cr, 1.5-2.5 wt% of Mo, 0.5-1.2 wt% of...
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WO/2021/229933A1 |
To form a linear groove having a desired groove width on a metal strip surface and, as a result, provide a grain-oriented electromagnetic steel sheet having extremely exceptional magnetic characteristics. A groove formation method in whi...
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WO/2021/227921A1 |
A high-strength anti-collapse oil casing and a manufacturing method therefor. The high-strength anti-collapse oil casing comprises the following chemical elements in percentage by mass: 0.08%-0.18% of C; 0.1%-0.4% of Si; 0.1%-0.28% of Mn...
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WO/2021/223937A1 |
the invention relates to a method for the open-loop or closed-loop control of the temperature of a steel strip during hot working in a hot strip mill. A higher-level open-loop or closed-loop control involves a process model which predict...
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WO/2021/224707A1 |
The present invention relates to a manufacturing method of a steel strip, a steel strip with controlled decarburized depth, a spot welded joint and the use of said steel strip or said spot welded joint. This invention is particularly wel...
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WO/2021/223760A1 |
A High-strength high-temperature alloy for thermal power units and a processing technique therefor. The high-temperature alloy comprises the following components by mass percentage: 0.05 to 0.08% of C, 14 to 17％ of Cr, ≤ 0.5% of Mn, ...
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WO/2021/224662A1 |
The present invention relates to a manufacturing method of a steel strip, a steel strip, a resistance spot welded joint and the use of said steel strip or said spot welded joint. This invention is particularly well suited for the automot...
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WO/2021/223734A1 |
A high-strength-and-toughness and high-strength-ductility-product automobile steel and a preparation method therefor. The present invention belongs to the technical field of the manufacturing of high-strength-and-toughness and high-stren...
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WO/2021/224423A1 |
The present disclosure relates to a new bainitic steel to be used for manufacturing a drill component, such as a drill rod, or in any other components wherein such steels are useful. The present disclosure further relates to a drill comp...
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WO/2021/225103A1 |
Provided is a duplex stainless steel seamless pipe having high toughness and demonstrating excellent resistance to HISC. This duplex stainless steel seamless pipe has the chemical compositions disclosed in the specification and a microst...
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WO/2021/223660A1 |
A process for smelting steel for an ultrafine carborundum wire, comprising: 1) in a vacuum induction furnace, using pure iron and low-phosphorus pig iron as raw materials to be melted into molten steel under the protection of argon; vacu...
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WO/2021/224026A1 |
The invention relates to a method for producing a steel sheet for packaging - cold-rolling a hot-rolled steel sheet made from a steel having a carbon content (C) of 10 to 1000 ppm by weight, the steel of the hot-rolled steel sheet having...
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WO/2021/219356A1 |
The invention relates to a method for retrofitting a thermal treatment facility, having at least the following steps: a) dividing a continuous furnace (2) into a first furnace (3) and a second furnace (4), b) arranging a temperature cont...
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WO/2021/220912A1 |
Austenitic heat-resistant steel that has a chemical composition containing, in mass%, 0.04-0.12% of C, 0.01-0.30% of Si, 0.50-1.50% of Mn, 0.001-0.040% of P, less than 0.0050% of S, 2.2-3.8% of Cu, 8.0-11.0% of Ni, 17.7-19.3% of Cr, 0.01...
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WO/2021/220913A1 |
This method is for manufacturing austenitic heat-resistant steel in which a difference between the content of Nb and the amount of Nb analyzed as an electrolytic extraction residue satisfies [0.170≤Nb-NbER≤0.480]. The method for manu...
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WO/2021/221003A1 |
An alloy material which contains elements including, in mass%, from 0.010% to 0.10% of C, more than 0.10% but not more than 0.50% of Si, from 0.05% to 0.50% of Mn, from 34.5% to 37.0% of Ni, from 0.001% to 1.0% of Nb, while satisfying (T...
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WO/2021/221245A1 |
Disclosed are ferrite-based stainless steel having improved surface characteristics and a method for manufacturing same. The ferrite-based stainless steel according to the present invention comprises, in % by weight: 0.001 to 0.05% of C;...
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WO/2021/221246A1 |
Disclosed are a ferritic stainless steel having improved corrosion resistance, and a method for manufacturing same. A ferritic stainless steel according to one embodiment of the present invention, comprises: 0.001 to 0.05 wt% of C; 0.001...
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WO/2021/218932A1 |
Disclosed is a high strength, high-temperature corrosion resistant martensitic stainless steel, characterized by comprising the following chemical elements in percentages by mass: 0＜C≤0.05%, 0.1-0.2% of Si, 0.20-1.0% of Mn, 11.0-14.0...
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WO/2021/218933A1 |
Disclosed is an economical low-yield ratio and high-strength steel, containing the following chemical elements in percentage by mass: 0.045 to 0.080％ of C, 0.10 to 0.30％ of Si, 1.60 to 1.85％ of Mn, 0.15 to 0.30％ of Cr, 0.06 to 0....
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WO/2021/215630A1 |
The present specification discloses low-cost austenitic stainless steel having high strength and high formability, and a method for manufacturing same. According to an embodiment of the disclosed low-cost austenitic stainless steel havin...
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WO/2021/213647A1 |
The invention relates to a hot-rolled flat steel product of a thickness of < 1.5 mm which has optimized mechanical properties and is particularly suitable for application of a Zn-based corrosion protection layer by hot-dip coating. For t...
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WO/2021/214538A1 |
Method for producing steel wire rod of round cross-section in the process of hot rolling is disclosed, wherein the charge heating up stage in the heating furnace is performed at the maximum temperature within the range of 1080 - 1100°C,...
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WO/2021/209503A1 |
In order to provide a method which is intended for producing a steel strip with a multiphase structure and by which the production of complex geometries with a high energy-absorption capacity and high resistance to edge cracking is made ...
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WO/2021/210655A1 |
Provided is a steel material having high strength and excellent low-temperature toughness. A steel material according to the present disclosure contains, in mass%: 0.15-0.45% of C; 0.05-1.00% of Si; 0.05-0.80% (exclusive of 0.80) of Mn; ...
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WO/2021/210671A1 |
A non-oriented electromagnetic steel sheet of which the chemical composition of the base metal is, in mass%, 0.0010-0.0040% of C, 4.0-5.0% of Si, at most 0.20 % of Mn, at least 0.010% and less than 0.050% of Al, at most 0.030% of P, at m...
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WO/2021/210564A1 |
A martensitic stainless steel which has a yield strength of at least 125 ksi, has excellent low-temperature toughness in very low temperature environments, and has excellent corrosion resistance, and a production method thereof are provi...
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WO/2021/210644A1 |
This high-strength hot-rolled steel sheet has a tensile strength of at least 850 MPa, prescribed chemical components, and an average dislocation density of 1 x 1014 to 1 x 1016 m-2; contains at least bainitic ferrite; has an area percent...
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WO/2021/210672A1 |
A non-oriented electromagnetic steel sheet of which the chemical composition of the base metal is, in mass%, 0.0010-0.0040% of C, 3.5-4.9% of Si, 0.05-0.20 % of Mn, 0.05%-0.45% of Al, at most 0.030% of P, at most 0.0030% of S, at most 0....
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WO/2021/210577A1 |
The present invention provides a steel near-net-shape material which has high fatigue strength and high tensile strength. This steel near-net-shape material is composed of: a polygonal ferrite which has an area ratio of from 20% to 90%, ...
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WO/2021/206080A1 |
Provided is a martensitic stainless seamless steel pipe which has yield strength of 655 MPa or more and excellent corrosion resistance and rarely undergoes the formation of inner surface flaws. The martensitic stainless seamless steel pi...
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WO/2021/207032A1 |
Herein is provided a ferrous shape memory alloy (SMA) wire and processes for production of ferrous shape memory alloy wire that do not require cry st alio graphic texturing processes to achieve superior superelastic and SMA wire properti...
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WO/2021/205880A1 |
This non-oriented electrical steel sheet has a prescribed chemical composition. The chemical composition satisfies (2×[Mn]+2.5×[Ni]+[Cu])-([Si]+2×[sol.Al]+4×[P])≥1.50%. If Ahkl-uvw represents the surface area ratio of crystal grain...
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WO/2021/200572A1 |
A high-strength low-alloy steel sheet having exceptional parent-material toughness and welded-joint toughness according to an embodiment of the present invention has a prescribed chemical composition, and is configured such that a parame...
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WO/2021/196365A1 |
A high-ductility pipeline steel plate and a manufacturing method therefor. The steel plate consists of the following components in percentage by mass: C: 0.02-0.07%, Si: 0.02-0.15%, Mn: 1.30-1.90%, P: ≤0.010%, S: ≤0.0020%, Cr: 0.10-0...
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WO/2021/200402A1 |
Provided are: an electroseamed steel pipe having high strength and excellent toughness and buckling resistance; and a method for manufacturing same. The electroseamed steel pipe has a base metal part and an electroseamed welded part, w...
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WO/2021/199629A1 |
The present invention provides a steel sheet in which, in particular, the low-temperature toughness of a high heat input HAZ has been improved. The present invention has a component composition that contains, in mass% and in prescribed r...
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WO/2021/200571A1 |
Provided are a high-strength stainless steel seamless pipe or an oil well, and a method for producing the same. This high-strength stainless steel seamless pipe for an oil well has a component composition which satisfies a predetermined ...
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WO/2021/201179A1 |
Provided is a free-cutting steel which, despite the absence of Pb, is machinable to a degree equal to or greater than a low carbon sulfur-lead composite free-cutting steel. The free-cutting steel: contains, in mass%, not more than 0.08% ...
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WO/2021/196820A1 |
Disclosed is a method for manufacturing a low remanence 5Ni steel plate with an excellent surface quality. The process flow thereof comprises: converter smelting -> LF refining -> RH high vacuum degassing -> treatment with Ca -> continuo...
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WO/2021/199400A1 |
This non-oriented electromagnetic steel sheet comprises a base material having a chemical composition that contains, in mass%, 0.0050% or less of C, from 3.8% to 5.0% of Si, more than 0.2% but less than 2.0% of Mn, 0.030% or less of P, 0...
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WO/2021/201159A1 |
Provided is a steel material having exceptional machinability and an exceptional detachment service life in a hydrogen generation environment in a carburized bearing component after a carburization process. A steel material contains, in ...
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WO/2021/201178A1 |
Provided is a free-cutting steel which, despite the absence of Pb, is machinable to a level equal to or greater than low carbon sulfur lead composite free-cutting steel. The free-cutting steel: contains, in mass%, less than 0.09% of C, 0...
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WO/2021/201157A1 |
The present invention provides a carburized bearing component which has excellent flaking life associated with the structure change in a hydrogen-generating environment. This carburized bearing component has a core part that has a chemic...
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