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8177925 High-tensile steel plate, welded steel pipe or tube, and methods of manufacturing thereof  
In a high-tensile steel plate according to the invention, the carbon equivalent Pcm represented in Expression (1) is from 0.180% to 0.220%, the surface hardness is a Vicker's hardness of 285 or...
8168011 High-strength steel wire excellent in ductility and method of manufacturing the same  
The invention provides wire rod excellent in drawability and steel wire made from the wire rod as starting material with high productivity at good yield and low cost. A hard steel wire rod of a...
8157931 Case hardenable nickel-cobalt steel  
An advanced secondary hardening carburized Ni—Co steel achieves an improved case hardness of about 68-69 Rc together with nominal core hardness of about 50 Rc.
8110292 High strength steel plate, steel pipe with excellent low temperature toughness, and method of production of same  
The present invention provides high strength steel plate with excellent low temperature toughness, high strength steel pipe using this as a base metal, and methods of production of the same. The...
8101029 Weld metal of high-strength Cr-Mo steel  
A weld metal of a high-strength Cr—Mo steel formed by shielded metal arc welding contains: 0.04 to 0.10% by mass C, 0.15 to 0.5% by mass Si, 0.5 to 1.0% by mass Mn, 2.00 to 3.25% by mass Cr, 0.9 t...
8097207 Steel having high mechanical strength and wear resistance  
Method for reducing the segregated seams of a steel which has high mechanical strength and high wear resistance and whose composition comprises by weight: 0.30%≦C≦1.42%; 0.05%≦Si≦1.5%; Mn≦1.95...
8097096 Fire resistant steel excellent in high temperature strength, toughness, and reheating embrittlement resistance and process for production of the same  
The present invention provides a fire resistant steel material excellent in high temperature strength, toughness, and reheating embrittlement resistance containing, by mass %, C: 0.001% to 0.030%,...
8084144 High strength thick welded steel pipe for line pipe superior in low temperature toughness and method of production of the same  
The present invention provides high strength thick welded steel pipe for line pipe superior in low temperature toughness, and a method of production of the same. A base material steel plate...
8070889 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
High-strength steel sheet and galvanized steel sheet having very good balance between hole expansibility and ductility, and also excellent in fatigue resistance, and methods of producing the steel sheets  
The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as...
8071017 Low cost high strength martensitic stainless steel  
A cobalt-free low cost high strength martensitic stainless steel, with concentration of Ni up to 3.0% and Mo up to 1.0% of weight, has HRC of 53, UTS of 297 ksi, YS of 220 ksi, Charpy V-notch...
8070890 Induction hardened hollow driving shaft  
The present invention provides an induction-hardened hollow driving shaft that comprises, as a raw material, a steel pipe that contains, by mass %, 0.30 to 0.47% C, 0.5% or less Si, 0.3 to 2.0% Mn,...
8057737 Forging steel and its manufacturing method, and forged parts  
A forging steel has a dissolved Mg concentration within the range of 0.04-5 ppm by mass and a dissolved Al concentration within the range of 50-500 ppm.
8048238 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
High young's modulus steel plate and method of production of same  
Steel sheet having a composition of ingredients containing substantially, by mass %, C: 0.005 to 0.200%, Si: 2.50% or less, Mn: 0.10 to 3.00%, N: 0.0100% or less, Nb: 0.005 to 0.100%, and Ti: 0.002...
8043444 Steel wire for cold-formed spring excellent in corrosion resistance and method for producing the same  
A steel wire for a cold-formed spring according to the present invention contains a prescribed chemical component composition, wherein: a martensitic transformation start temperature MS1 shown by...
8039118 Welded steel pipe for high strength line pipe superior in low temperature toughness and method of production of the same  
The present invention provides high strength welded steel pipe for line pipe inexpensive in cost and superior in low temperature toughness, and a method of production of the same, produced by...
8038809 High strength hot rolled steel sheet excellent in bore expanding workability and method for production thereof  
A high-strength hot-rolled steel sheet containing C: 0.05 to 0.15%, Si: no more than 1.50% (excluding 0%), Mn: 0.5 to 2.5%, P: no more than 0.035% (excluding 0%), S: no more than 0.01% (including...
8025746 Turbine casing  
A casing is formed from an alloy which contains, by mass, 0.08-0.20% C, 0.05-0.45% Si, 0.10-0.30% Mn, 0.80-1.40% Ni, 1.00-1.40% Cr, 1.20-1.60% Mo, 0.10-0.30% V, 0.06-0.10% Ti, 0.0005-0.0010% B, not...
8016954 Ultratough high-strength weldable plate steel and method of manufacture thereof  
A transformation toughened, high-strength steel alloy useful in plate steel applications achieves extreme fracture toughness (Cv & gt 80 ft-lbs corresponding to KId & equals 200 ksi.in½) at ...
8012272 Tool steels and manufacturing method thereof  
The present invention provides a tool steel containing, by mass percent, 0.55 to 0.85% of C, 0.20 to 2.50% of Si, 0.30 to 1.20% of Mn, 0.50% or less of Cu, 0.01 to 0.50% of Ni, 6.00 to 9.00% of Cr,...
8007715 Welding additive material  
A steel has the following chemical composition (amounts in % by weight): 0.05-0.14 C,8-13 Cr,1-2.6 Ni,0.5-1.9 Mo,0.5-1.5 Mn,0.15-0.5 Si,0.2-0.4 V,0-0.04 B,2.1-4.0 Re,0-0.07 Ta,0-60 ppm Pd,remainder...
8007603 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% a...
8002910 Seamless steel tube which is intended to be used as a guide pipe and production method thereof  
The present invention pertains to steel with high mechanical resistance at room temperature and up to 130° C., good toughness and good corrosion resistance in the metal base as well as good ...
7998285 Abrasion-resistant steel plate  
The invention concerns a method for making an abrasion resistant steel plate having a chemical composition comprising: 0.1%≦C<0.23%; 0%≦Si≦2%; 0%≦Al≦2%; 0.5%≦Si+Al≦2%; 0%≦Mn≦2.5%; 0%≦Ni≦5%; 0%≦Cr≦5...
7981224 Multi-phase steel sheet excellent in hole expandability and method of producing the same  
The present invention provides a steel sheet excellent in both a balance between strength and elongation and a balance between strength and hole expandability, in other words, a multi-phase steel...
7967923 Steel plate that exhibits excellent low-temperature toughness in a base material and weld heat-affected zone and has small strength anisotropy, and manufacturing method thereof  
The present invention provides a steel plate that exhibits excellent low-temperature toughness in a base material and a weld heat-affected zone and has small strength anisotropy, wherein the steel...
7967922 Ferrous abrasion resistant sliding material  
A ferrous abrasion resistant sliding material capable of improving seizing resistance, abrasion resistance and heat crack resistance is provided. The ferrous abrasion resistant sliding material has...
7959745 High-strength steel pipe of API X65 grade or higher  
A high-strength steel pipe having a strength of API X65 grade or higher consisting essentially of, by mass %, 0.02 to 0.08% of C, 0.01 to 0.5% of Si, 0.5 to 1.8% of Mn, 0.01% or less of P, 0.002%...
7955445 Internal high hardness type pearlitic rail with excellent wear resistance and rolling contact fatigue resistance and method for producing same  
An internal high hardness type pearlitic rail that has a composition containing 0.73% to 0.85% by mass C, 0.5% to 0.75% by mass Si, 0.3% to 1.0% by mass Mn, 0.035% by mass or less P, 0.0005% to...
7935197 High strength steel plate  
A high strength steel plate containing 0.02 to 0.08% C, by mass, and has substantially a two phase microstructure of ferrite and bainite. The ferrite contains precipitates having a particle size of...
7931757 Seamless steel pipe for line pipe and a process for its manufacture  
A thick-walled seamless steel pipe for line pipe which has a high strength and improved toughness and corrosion resistance in spite of the thick wall and which is suitable for use as a riser and...
7922968 Corrosion resistance improved steel sheet for automotive muffler and method of producing the steel sheet  
Provided are a steel sheet for an automotive muffler and a method for producing the steel sheet. The steel sheet includes 0.01% by weight or less of C, 0.1 to 0.3% by weight of Si, 0.3 to 0.5% by...
7922836 Ferrous abrasion resistant sliding material  
A ferrous abrasion resistant sliding material capable of improving seizing resistance, abrasion resistance and heat crack resistance is provided. The ferrous abrasion resistant sliding material has...
7919194 High strength steel sheet having superior ductility  
A high strength steel sheet and a method for manufacturing the same has superior phosphatability properties and hot-dip galvannealed properties besides a tensile strength of 950 MPa or more and a...
7914629 High strength thick steel plate superior in crack arrestability  
The present invention provides high strength thick steel plate superior in crack arrestability high in strength, free of deterioration of HAZ toughness, and free of anisotropy, that steel plate...
7901520 Spring wire rod excelling in fatigue characteristics  
Disclosed herein is a spring wire rod excelling in fatigue characteristics. It contains TiN inclusions having a specific size defined by the ratio of each group in all the visual fields as follows:...
7896985 Seamless steel pipe for line pipe and a process for its manufacture  
A seamless steel pipe for line pipe having a high strength and good toughness and corrosion resistance even though having a thick wall has a chemical composition comprising, in mass percent, C:...
7879159 Martensitic stainless steel strengthened by Ni3Ti η-phase precipitation  
A precipitation-hardened stainless maraging steel which exhibits a combination of strength, toughness, and corrosion resistance comprises by weight about: 8 to 15% chromium (Cr), 2 to 15% cobalt...
7879160 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;...
7850794 Spring steel with improved hardenability and pitting resistance  
The present invention provides a spring steel that has superior hardenability, undergoes less pitting in a corrosive environment, and can achieve higher stress and toughness. More specifically, the...
7846275 High strength hot rolled steel sheet having excellent stretch flangeability and its production method  
Disclosed is a hot rolled steel sheet in which it includes a steel having a chemical composition of 0.03 to 0.10% (the percent hereinafter representing % by mass) of C, 0.2 to 2.0% of Si, 0.5 to...
7815755 Seamless steel pipe and manufacturing method thereof  
The present invention relates to the following seamless steel pipes excellent in strength, toughness and weldability, particularly suitable for submarine flow lines, and a manufacturing method...
7799149 Oil country tubular good for expansion in well and manufacturing method thereof  
An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to...
7794651 Steel having high mechanical strength and wear resistance  
Method for reducing the segregated seams of a steel which has high mechanical strength and high wear resistance and whose composition comprises by weight: 0.30%≦C≦1.42%; 0.05%≦Si≦1.5%; Mn≦1.95...
7785531 Alloy for roller bearing  
An alloy for aircraft roller bearings containing: 0.45 to 1.0 wt. % carbon,max 2.0 wt. % manganese,max 1.0 wt. % silicon,8.5 to 11.5 wt. % chromium,1.0 to 4.5 wt. % molybdenum,1.0 to 2.5 wt. %...
7776160 Method of producing a cold temperature high toughness structural steel tubing  
An apparatus (10) includes a low-carbon steel tube (24). The low-carbon steel tube (24) yields plastically more than about 5% before fracturing at temperatures down to about −40° C. when stress is...
7776161 Cold-rolled steel sheet excellent in workability  
The present invention provides a steel sheet excellent in workability, which may be used for components of an automobile or the like, and a method for producing the same. More specifically,...
7763123 Spring produced by a process comprising coiling a hard drawn steel wire excellent in fatigue strength and resistance to setting  
Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel...
7763124 Steel material with excellent rolling fatigue life and method of producing the same  
Provided are a steel having excellent rolling contact fatigue life and the manufacturing method thereof. The steel consists essentially of 0.7 to 1.1% C, 0.2 to 2.0% Si, 0.4 to 2.5% Mn, 1.6 to 4.0%...
7758707 Martensitic stainless steel and method of the manufacture  
The invention relates to a martensitic stainless steel to be used for making a razor, surgical and similar blades or other cutting tools, which steel contains 0.40 to 0.55 wt % carbon, 0.8 to 1.5...
7754031 Weldable steel building component and method for making same  
The invention concerns weldable steel building components whereof the chemical composition comprises, by weight: 0.10%≦C≦0.22%, 0.50%≦Si≦1.50%, AI≦0.9%, 0%≦Mn≦3%, 0%≦Ni≦5%, 0%≦Cr≦4%, 0%≦Cu≦1...
Matches 1 - 50 out of 298 1 2 3 4 5 6 >