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US20120031532 Steel plate for line pipe excellent in strength and ductility and method of production of same  
The present invention provides steel plate for line pipe excellent in strength and ductility and a method of production of the same. The steel plate has a steel composition containing, by mass %,...
US20150090370 HIGH STRENGTH STEEL PLATE HAVING LOW YIELD RATIO EXCELLENT IN TERMS OF STRAIN AGEING RESISTANCE, METHOD OF MANUFACTURING THE SAME AND HIGH STRENGTH WELDED STEEL PIPE MADE OF THE SAME  
A steel plate has a chemical composition containing, by mass %, C: 0.03% or more and 0.08% or less, Si: 0.01% or more and 1.0% or less, Mn: 1.2% or more and 3.0% or less, P: 0.015% or less, S:...
US20140000767 STEEL WIRE ROD AND METHOD OF PRODUCING SAME  
A steel wire rod which is a material of steel wires includes, as a metallographic structure, by area %, 95% to 100% of a pearlite, wherein an average pearlite block size at a central portion of...
US20150059912 HIGH STRENGTH STEEL PLATE HAVING LOW YIELD RATIO EXCELLENT IN TERMS OF STRAIN AGEING RESISTANCE, METHOD OF MANUFACTURING THE SAME AND HIGH STRENGTH WELDED STEEL PIPE MADE OF THE SAME  
A steel plate has a chemical composition containing, by mass %, C: 0.03% or more and 0.08% or less, Si: 0.01% or more and 1.0% or less, Mn: 1.2% or more and 3.0% or less, P: 0.015% or less, S:...
US20130133789 STEEL WIRE OF SPECIAL STEEL AND WIRE ROD OF SPECIAL STEEL  
A predetermined composition is had, when a C content is represented by (C %), in a case of (C %) being not less than 0.35% nor more than 0.65%, a volume fraction of pearlite is 64×(C %)+52% or...
US20150010775 HOT STAMPED STEEL AND METHOD FOR PRODUCING HOT STAMPED STEEL  
A hot stamped steel according to the present invention satisfies an expression of (5×[Si]+[Mn])/[C]>11 when [C] represents an amount of C by mass %, [Si] represents an amount of Si by mass %, and...
US20140290810 HIGH STRENGTH COLD ROLLED STEEL SHEET WITH EXCELLENT DEEP DRAWABILITY AND MATERIAL UNIFORMITY IN COIL AND METHOD FOR MANUFACTURING THE SAME  
A high strength cold rolled steel sheet includes a chemical composition containing, by mass %, C: 0.010% or more and 0.060% or less, Si: more than 0.5% and 1.5% or less, Mn: 1.0% or more and 3.0%...
US20100314006 STEEL FOR INDUCTION HARDENING WITH EXCELLENT COLD WORKABILITY, ROLLING MEMBER MADE OF THE SAME, AND MOTION GUIDE DEVICE USING ROLLING MEMBER  
This steel for induction hardening contains, by percent by mass, C: 0.7 to 0.9%, Si: 0.4 to 1.0%, Mn: 0.5 to 1.25%, P: 0.030% or less, S: 0.030% or less, Cr: 0.4% or less, Al: 0.05% or less, Ti:...
US20150050519 HOT STAMPED STEEL AND METHOD FOR PRODUCING THE SAME  
In a hot stamped steel, when [C] represents an amount of C (mass %), [Si] represents an amount of Si (mass %), and [Mn] represents an amount of Mn (mass %), an expression of 5×[Si]+[Mn])/[C]>10 is...
US20130087250 STEEL FOR NITRIDING AND NITRIDED PART  
The present invention provides a steel for nitriding with a composition including, by mass %: C: 0.10% to 0.20%; Si: 0.01% to 0.7%; Mn: 0.2% to 2.0%; Cr: 0.2% to 2.5%; Al: 0.01% to less than...
US20120318410 STRAND FOR SAW WIRE AND MANUFACTURING METHOD THEREOF  
Regarding contents of C, Si, Mn and Cr, a value of parameter P represented by the following (equation 1) is 1000 or more. A metallic structure contains wire-drawn pearlite in an area ratio of 98%...
US20120291927 DRAWN HEAT TREATED STEEL WIRE FOR HIGH STRENGTH SPRING USE AND PRE-DRAWN STEEL WIRE FOR HIGH STRENGTH SPRING USE  
Drawn heat treated steel wire for high strength spring use is provided containing, by mass %, C: 0.67% to less than 0.9%, Si: 2.0 to 3.5%, Mn: 0.5 to 1.2%, Cr: 1.3 to 2.5%, N: 0.003 to 0.007%, and...
US20150114524 HIGH STRENGTH COLD-ROLLED STEEL SHEET EXHIBITING LITTLE VARIATION IN STRENGTH AND DUCTILITY, AND MANUFACTURING METHOD FOR SAME  
In a high strength cold-rolled steel plate having a specific chemical composition, a soft first phase (ferrite) has an area ratio of 20-50%, the remainder being a hard second phase (tempered...
US20120193000 STEEL FOR INDUCTION HARDENING AND INDUCTION HARDENED STEEL PART AND METHODS OF PRODUCTION OF SAME  
Steel for induction hardening wherein coarsening of austenite crystal grains can be prevented even at a high temperature of over 1100° C. such as which occurs at projecting parts of steel parts at...
US20140261918 ENHANCED WEAR RESISTANT STEEL AND METHODS OF MAKING THE SAME  
Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous wear resistant steel. More particularly, the present disclosure provides high...
US20100322816 RAW MATERIAL FOR SHOT-PEENING MATERIALS, FINISHED WIRE, METHOD OF MANUFACTURING SHOT-PEENING MATERIALS, AND SHOT-PEENING MATERIALS  
The purposes of the present inventions are to provide a raw material for shot-peening materials wherein breaking a wire is prevented in obtaining a finished wire to improve the productivity, to...
US20140322559 High-Strength Flat Steel Product and Method for Producing Same  
A flat steel product having a tensile strength of at least 1200 MPa and consists of steel containing (wt %) C: 0.10-0.50%, Si: 0.1-2.5%, Mn: 1.0-3.5%, Al: up to 2.5%, P: up to 0.020%, S: up to...
US20110114232 Method for Producing Steel Sheet for Gasket, and Gasket  
The present invention aims at providing: a method for manufacturing such a kind of gasket-oriented steel plate excellent in elasticity and formability, in a manner to allow for reduction of a...
US20110168302 HIGH-STRENGTH ULTRATHIN STEEL WIRE AND METHOD OF MANUFACTURING THE SAME  
The present invention provides a steel wire, including chemical components of: C: 0.7-1.2 mass %; Si: 0.05-2.0 mass %; and Mn: 0.2-2.0 mass %, with a balance including Fe and inevitable...
US20140230969 TRIP-AIDED DUAL-PHASE MARTENSITIC STEEL AND ULTRAHIGH-STRENGTH-STEEL PROCESSED PRODUCT USING SAME  
Provided is a TRIP-aided dual-phase martensitic steel which is excellent in terms of strength-elongation balance and Charpy impact value and has dual-phase martensite composed of a soft lath...
US20070051434 Ready-use low-carbon steel mechanical component for plastic deformation and method for making same  
A ready-for-use low-carbon steel mechanical component, like wheel swivel joints of terrestrial vehicles, pins, shafts, suspension bars, links . . . with elevated characteristics obtained by a hot...
US20120298267 Non-Oriented Electrical Steel Having High Magnetic Induction And High Intensity And Manufacturing Method Thereof  
A non-oriented electrical steel has relative high magnetic induction and high intensity without increasing manufacturing difficulty. The weight percentage of the compositions of the electrical...
US20130167983 SUPER BAINITE STEEL AND METHOD FOR MANUFACTURING IT  
The invention relates to a super bainite steel consisting of the following elements in weight %: C: 0.4-1.1 Mn: 0.4-2.1 Si: 0.15-1.2 Al: 0.0-2.0 Cr: 0.0-1.4 Ni: 0.0-2.5 Mo: 0.0-0.6 V: 0.0-0.3 Co:...
US20120279620 HIGH STRENGTH HOT-ROLLED STEEL PLATE EXHIBITING EXCELLENT ACID PICKLING PROPERTY, CHEMICAL CONVERSION PROCESSABILITY, FATIGUE PROPERTY, STRETCH FLANGEABILITY, AND RESISTANCE TO SURFACE DETERIORATION DURING MOLDING, AND HAVING ISOTROPIC STRENGTH AND DUCTILITY, AND METHOD FOR PRODUCING SAID HIGH STRENGTH HOT-ROLLED STEEL PLATE  
This high strength hot-rolled steel sheet includes: in terms of percent by mass, C: 0.05 to 0.12%; Si: 0.8 to 1.2%; Mn: 1.6 to 2.2%; Al: 0.30 to 0.6%; P: 0.05% or less; S: 0.005% or less; and N:...
US20150167112 ROLLED WIRE ROD AND MANUFACTURING METHOD THEREOF  
A rolled wire rod includes, as a chemical component, by mass %, C: 0.95% to 1.10%, Si: 0.10% to 0.70%. Mn: 0.20% to 1.20%, and Cr: 0.90% to 1.60%, the balance consisting of Fe and unavoidable...
US20140216609 HIGH STRENGTH HOT-ROLLED STEEL SHEET FOR WELDED STEEL LINE PIPE HAVING EXCELLENT SOURING RESISTANCE, AND METHOD FOR PRODUCING SAME (AS AMENDED)  
A steel material containing 0.01% to 0.07% C, 0.40% or less Si, 0.5% to 1.4% Mn, 0.1% or less Al, 0.01% to 0.15% Nb, 0.1% or less V, 0.03% or less Ti, and 0.008% or less N on a mass basis, Nb, V,...
US20150075682 HIGH TENSILE STRENGTH STEEL PLATE HAVING EXCELLENT WELD HEAT-AFFECTED ZONE LOW-TEMPERATURE TOUGHNESS AND METHOD FOR PRODUCING SAME  
The present invention provides a high tensile strength steel plate having a chemical composition containing, in percent by mass, 0.03% to 0.12% of C, 0.01% to 0.30% of Si, 0.5% to 1.95% of Mn,...
US20130008570 ULTRAHIGH-STRENGTH STEEL SHEET WITH EXCELLENT WORKABILITY, AND MANUFACTURING METHOD THEREOF  
Disclosed is an ultra high strength steel plate with at least 1100 MPa of tensile strength that has both an excellent strength-stretch balance and excellent bending workability, and a method for...
US20150159247 STEEL MATERIAL FOR FRICTION WELDING, AND METHOD FOR PRODUCING SAME  
A chemical composition includes, in mass percent, C: 0.30 to 0.55%, Si: 0.05 to 1.0%, Mn: 0.05 to 0.9%, P: 0.001 to 0.030%, S: 0.005 to 0.12%, Cr: 0.05 to 2.0%, Al: 0.005 to 0.05%, N: 0.0050 to...
US20130095313 METHOD FOR INHIBITING CORROSION UNDER INSULATION ON THE EXTERIOR OF A STRUCTURE  
A method for inhibiting corrosion under insulation (CUI) on the exterior of a structure, e.g., pipelines, piping, vessels and tanks, is provided. The method involves providing a structure that is...
US20080216927 High Temperature Bolt Material  
A high temperature bolt material, characterized in that it is a ferrite steel comprising 8 wt % or more of Cr and having a tempered martensite structure and can be used in a high temperature...
US20150184270 WEAR RESISTANT STEEL PLATE AND MANUFACTURING PROCESS THEREFOR  
A wear resistant steel plate that exhibits excellent impact wear resistant properties and that is suitable for use in construction machinery, shipbuilding, steel pipes or tubes, civil engineering,...
US20110155290 CASE HARDENING STEEL, CARBURIZED COMPONENT, AND MANUFACTURING METHOD OF CASE HARDENING STEEL  
This case hardening steel has a chemical composition including, by mass %: C: 0.1 to 0.6%; Si: 0.02 to 1.5%; Mn: 0.3 to 1.8%; P: 0.025% or less; S: 0.001 to 0.15%; Al: over 0.05 to 1.0%; Ti: 0.05...
US20150225822 ABRASION RESISTANT STEEL PLATE HAVING EXCELLENT LOW-TEMPERATURE TOUGHNESS AND EXCELLENT CORROSIVE WEAR RESISTANCE  
An abrasion resistant steel plate which possesses excellent abrasion resistance, excellent low-temperature toughness and excellent corrosive wear resistance. The abrasion resistant steel plate has...
US20130048161 HIGH STRENGTH PRESS-FORMED MEMBER AND METHOD FOR MANUFACTURING THE SAME  
A high strength press-formed member includes a steel sheet constituting the member including a composition including by mass %, C: 0.12% to 0.69%, Si: 3.0% or less, Mn: 0.5% to 3.0%, P: 0.1% or...
US20140251513 HIGH-STRENGTH HOT ROLLED STEEL SHEET WITH EXCELLENT BENDABILITY AND LOW-TEMPERATURE TOUGHNESS, AND METHOD FOR MANUFACTURING THE SAME  
A high-strength hot rolled steel sheet with excellent bendability and low-temperature toughness includes a chemical composition including, in mass %, C: 0.08 to 0.25%, Si: 0.01 to 1.0%, Mn: 0.8 to...
US20130048156 CASE HARDENING STEEL AND MANUFACTURING METHOD THEREOF  
A case hardening steel includes by mass %, C: 0.1% to 0.5%, Si: 0.01% to 1.5%, Mn: 0.3% to 1.8%, S: 0.001% to 0.15%, Cr: 0.4% to 2.0%, Ti: 0.05% to 0.2%, Al: limited to 0.2% or less, N: limited to...
US20100065166 STEEL PIPE WITH EXCELLENT EXPANDABILITY AND METHOD FOR PRODUCING THE SAME  
A steel pipe with excellent expandability, comprises, by mass %, C: 0.1 to 0.45%, Si: 0.3 to 3.5%, Mn: 0.5 to 5%, P: less than or equal to 0.03%, S: less than or equal to 0.01%, soluble Al: 0.01...
US20070095439 SPRING STEEL WITH EXCELLENT RESISTANCE TO HYDROGEN EMBRITTLEMENT AND STEEL WIRE AND SPRING OBTAINED FROM THE STEEL  
Disclosed is a spring steel, containing: C: 0.35-0.65% (the term “%” herein means “mass %”, the same is true hereinbelow), Si: 1.5-2.5%, Mn: 0.05-1%, Cr: 0.05-1.9%, P: 0.015% or less (exclusive of...
US20080314481 High-Strength Steel for Seamless, Weldable Steel Pipes  
A low-alloy steel containing, by weight percent, C 0.03-0.13%, Mn 0.90-1.80%, Si≦0.40%, P≦0.020%, S≦0.005%, Ni 0.10-1.00%, Cr 0.20-1.20%, Mo 0.15-0.80%, Ca≦0.040%, V≦0.10%, Nb≦0.040%, Ti≦0.020%...
US20090229710 METHOD FOR PRODUCTION OF STEEL MATERIAL HAVING EXCELLENT SCALE DETACHMENT PROPERTY, AND STEEL WIRE MATERIAL HAVING EXCELLENT SCALE DETACHMENT PROPERTY  
The present invention aims at providing a method for production of a steel product which surely retains scale during cooling, storage, and transportation and permits scale to scale off easily at...
US20140227546 QUENCHED AND PARTITIONED HIGH-CARBON STEEL WIRE  
A high-carbon steel wire has as steel composition: a carbon content ranging from 0.40 weight percent to 0.85 weight percent, a silicon content ranging from 1.0 weight percent to 2.0 weight...
US20130213529 HIGH-STRENGTH COLD ROLLED STEEL SHEET HAVING EXCELLENT DEEP DRAWABILITY AND BAKE HARDENABILITY AND METHOD FOR MANUFACTURING THE SAME  
A high-strength cold rolled steel sheet having excellent deep drawability and bake hardenability, with a tensile strength ≧440 MPa, an average r-value ≧1.20 and a bake hardening value ≧40 MPa, is...
US20140299237 METHOD FOR MANUFACTURING A HIGH-STRENGTH STRUCTURAL STEEL AND A HIGH-STRENGTH STRUCTURAL STEEL PRODUCT  
The invention relates to a method for manufacturing a high-strength structural steel and to a high-strength structural steel product. The method comprises a providing step for providing a steel...
US20110209803 High-Strength Steel Machined Product and Method for Manufacturing the Same, and Method for Manufacturing Diesel Engine Fuel Injection Pipe and Common Rail  
A high-strength steel machined product giving excellent hardenability has a metal microstructure with excellent balance of strength and toughness and high stability of retained austenite. The...
US20130095347 HOT-STAMPED STEEL, METHOD OF PRODUCING OF STEEL SHEET FOR HOT STAMPING, AND METHOD OF PRODUCING HOT-STAMPED STEEL  
A hot-stamped steel according to the present invention includes, by mass %, C: 0.20% to 0.35%, Si: 0.1% to 0.5%, the total of at least one selected from Mn and Cr: 1% to 3%, Al: 0.005% to 0.06%,...
US20140326369 STEEL FOR MECHANICAL STRUCTURE FOR COLD WORKING, AND METHOD FOR MANUFACTURING SAME  
Provided are a steel for a mechanical structure for cold working, and a method for manufacturing the same, whereby softening and variations in hardness can be reduced even when a conventional...
US20140102600 Bainitic Steel of High Strength and High Elongation and Method to Manufacture Said Bainitic Steel  
The invention relates to a bainite steel consisting of the following elements in weight %: C: 0.25-0.55 Si: 0.5-1.8 Mn: 0.8-3.8 Cr: 0.2-2.0 Ti: 0.0-0.1 Cu: 0.0-1.2 V: 0.0-0.5 Nb: 0.0-0.06 Al:...
US20110126946 BAINITE STEEL AND METHODS OF MANUFACTURE THEREOF  
Super Bainite Steel is described comprising between 90% and 50% bainite, the rest being austenite, in which excess carbon remains within the bainitic ferrite at a concentration beyond that...
US20130186521 PROFILED STEEL WIRE WITH HIGH MECHANICAL CHARACTERISTICS RESISTANT TO HYDROGEN EMBRITTLEMENT  
This profiled wire, of NACE grade, made of low-alloy carbon steel intended to be used in the offshore oil exploitation sector, is characterized in that it has the following chemical composition,...

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