| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 148542000 | Containing at least nine percent chromium(Cr) (e.g., stainless steel, etc.) | 16 |
| 20090065104 | Method of producing a cold-rolled strip with a ferritic structure - A method of making a cold strip with a ferritic structure includes casting a molten steel which forms a ferritic structure on cooling into a cast strip, wherein if necessary hot-rolling the cast strip in-line, coiling the hot-rolled strip and in one or more steps cold-rolling to form the cold strip. With such a method, cold strips can be produced, in which the risk of formation of an orange peel appearance or ridging is minimized during a cold forming process. The cast strip is cooled between the casting process and the coiling process from a starting temperature not lower than 1180° C., at a cooling rate of at least 150° C. per second, to a maximum intermediate temperature of 1000° C. and is then held for at least 10 seconds at a maintenance temperature of between 900 and 1000° C. | 03-12-2009 |
| 20090120540 | COLD DIE STEEL EXCELLENT IN CHARACTERISTIC OF SUPPRESSING DIMENSIONAL CHANGE - A cold die steel excellent in the characteristic of suppressing dimensional change, which has a chemical composition in mass %: C: 0.7% or more and less than 1.6%, Si: 0.5 to 3.0%, Mn: 0.1 to 3.0%, P: less than 0.05% including 0%, S: 0.01 to 0.12%, Cr: 7.0 to 13.0%, one or two elements selected from the group consisting of Mo and W: amounts satisfying the formula (Mo+(W/2))=0.5 to 1.7%, V: less than 0.7% including 0, Ni: 0.3 to 1.5%, Cu: 0.1 to 1.0% and Al: 0.1 to 0.7%. Preferably, the die steel satisfies the formula in mass %: Ni/Al=1 to 3.7. It is preferred that the die steel also satisfies the following formula in mass %: (Cr−4.2×C)=5 or less and (Cr−6.3×C)=1.4 or more and that it contains 0.3% or less of Nb. | 05-14-2009 |
| 20090283182 | Method of Making a High Strength, High Toughness, Fatigue Resistant, Precipitation Hardenable Stainless Steel and Product Made Therefrom - A process for making a precipitation hardenable stainless steel alloy is described. The process includes the step of melting a martensitic steel alloy having the following composition in weight percent, about | 11-19-2009 |
| 20100089501 | Martensitic Creep Resistant Steel Strengthened by Z-Phase - The present invention relates to steel alloys having a martensitic or martensitic-ferritic structure and comprising Z-phase (CrXN) particles, where X is one or more of the elements V, Nb, Ta, and where the Z-phase particles have an average size of less than 400 nm. The alloy comprises by wt % the following components: 9 to 15% Cr, 0.01-0.20% N, C in an amount less than 0.1%, one or more of: 0.01-0.5% V, 0.01-1% Nb, 0.01-2% Ta, and a balance being substantially iron and inevitable impurities. The invention further relates to a method of manufacturing such a steel alloy, a component comprising such a steel alloy, and to the use of such a steel alloy for high temperature components. | 04-15-2010 |
| 20100108203 | Ultra-High Strength Stainless Alloy Strip, a Method of Making Same, and a Method of Using Same for Making a Golf Club Head - A stainless steel strip article is disclosed. The article is formed from a corrosion resistant alloy having the following composition in weight percent, about: | 05-06-2010 |
| 20100258217 | Nanocarbide Precipitation Strengthened Ultrahigh-Strength, Corrosion Resistant, Structural Steels - A nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steel possesses a combination of strength and corrosion resistance comprising in combination, by weight, about: 0.1 to 0.3% carbon (C), 8 to 17% cobalt (Co), 0 to 10% nickel (Ni), 6 to 12% chromium (Cr), less than 1% silicon (Si), less than 0.5% manganese (Mn), and less than 0.15% copper (Cu), with additives selected from the group comprising about: less than 3% molybdenum (Mo), less than 0.3% niobium (Nb), less than 0.8% vanadium (V), less than 0.2% tantalum (Ta), less than 3% tungsten (W), and combinations thereof, with additional additives selected from the group comprising about: less than 0.2% titanium (Ti), less than 0.2% lanthanum (La) or other rare earth elements, less than 0.15% zirconium (Zr), less than 0.005% boron (B), and combinations thereof, impurities of less than about: 0.02% sulfur (S), 0.012% phosphorus (P), 0.015% oxygen (O) and 0.015% nitrogen (N), the remainder substantially iron (Fe), incidental elements and other impurities. The alloy is strengthened by nanometer scale M | 10-14-2010 |
| 20100276038 | MARTENSITIC STAINLESS STEEL, METHOD FOR MAKING PARTS FROM SAID STEEL AND PARTS THUS MADE - Martensitic stainless steel, characterised in that it comprises, in percentages by weight:
| 11-04-2010 |
| 20110226391 | C+N AUSTENITIC STAINLESS STEEL HAVING HIGH STRENGTH AND EXCELLENT CORROSION RESISTANCE, AND FABRICATION METHOD THEREOF - A C+N austenitic stainless steel with high mechanical strength and excellent corrosion resistance and a fabrication method thereof are provided. The C+N austenitic stainless steel consists of: 8 to 12 wt. % manganese; 15 to 20 wt. % chromium; 2 wt. % or less nickel; 4 wt. % or less tungsten; 2 wt. % or less molybdenum; 0.6 to 1.0 wt. % of total C+N content; a balance of iron; and unavoidable impurities. The austenitic stainless steel fabricated provides mechanical properties of a tensile strength of 850 MPa or higher and an uniform elongation of 45% or higher, obtained through controlling the contents of the interstitial elements and those of the substitutional elements. The alloy also provides corrosion resistance and a biocompatibility due to the minimized content of nickel which causes allergic reaction to the human body. Therefore, the C+N austenitic stainless steel is applicable in the fabrication of a variety of functional components and structural fields. | 09-22-2011 |
| 20120160376 | HEAT RESISTANT CAST STEEL, MANUFACTURING METHOD THEREOF, CAST PARTS OF STEAM TURBINE, AND MANUFACTURING METHOD OF CAST PARTS OF STEAM TURBINE - A heat resistant cast steel of an embodiment contains in percent by mass C: 0.05-0.15, Si: 0.03-0.2, Mn: 0.1-1.5, Ni: 0.1-1, Cr: 8-10.5, Mo: 0.2-1.5, V: 0.1-0.3, Co: 0.1-5, W: 0.1-5, N: 0.005-0.03, Nb: 0.01-0.2, B: 0.002-0.015, Ti: 0.01-0.1, and a remainder comprising Fe and unavoidable impurities. | 06-28-2012 |
| 20130037179 | METAL ALLOYS FOR HIGH IMPACT APPLICATIONS - A casting of a white cast iron alloy and a method of producing the casting are disclosed. A white cast alloy is also disclosed. The casting has a solution treated microstructure that comprises a ferrous matrix of retained austenite and chromium carbides dispersed in the matrix, with the carbides comprising 15 to 60% volume fraction of the alloy. The matrix composition comprises: manganese: 8 to 20 wt %; carbon: 0.8 to 1.5 wt %; chromium: 5 to 15 wt %; and iron: balance (including incidental impurities). | 02-14-2013 |
| 20130092296 | MARTENSITIC ANTIBACTERIAL STAINLESS STEEL AND MANUFACTURING METHOD THEREOF - This invention relates to antimicrobial martensitic stainless steels with nano precipitation and their manufacturing method of melting, forging, heat treatment. As the nano ε-Cu phases are precipitated in the matrix dispersedly, the martensitic stainless steels have excellent antimicrobial properties. The martensitic stainless steels may comprise from 0.35 to 1.20 weight percent C, from 12.00 to 26.90 weight percent Cr, from 0.29 to 4.60 weight percent Cu, 0.27 weight percent as less Ag, from 0.15 to 4.60 weight percent W, from 0.27 to 2.80 weight percent Ni, from 0.01 to 1.125 weight percent Nb, from 0.01 to 1.35 weight percent V, 1.8 percent or less Mn, from 0.15 to 4.90 weight percent Mo, 2.6 weight percent or less Si, 3.6 weight percent or less RE (rare earth) and the balance Fe and incidental impurities. | 04-18-2013 |
| 20140190594 | Classes of Steels for Tubular Products - The present disclosure is directed and formulations and methods to provide alloys having relative high strength and ductility. The alloys may be provided in seamless tubular form and characterized by their particular alloy chemistries and identifiable crystalline grain size morphology. The alloys are such that they include boride pinning phases. In what is termed a Class 1 Steel the alloys indicate tensile strengths of 700 MPa to 1400 MPa and elongations of 10-70%. Class 2 Steel indicates tensile strengths of 800 MPa to 1800 MPa and elongations of 5-65%. Class 3 Steel indicates tensile strengths of 1000 MPa to 2000 MPa and elongations of 0.5-15%. | 07-10-2014 |
| 20150090372 | Recrystallization, Refinement, and Strengthening Mechanisms For Production Of Advanced High Strength Metal Alloys - This disclosure deals with a class of metal alloys with advanced property combinations applicable to metallic sheet production. More specifically, the present application identifies the formation of metal alloys of relatively high strength and ductility and the use of one or more cycles of elevated temperature treatment and cold deformation to produce metallic sheet at reduced thickness with relatively high strength and ductility. | 04-02-2015 |
| 20150101714 | Recrystallization, Refinement, and Strengthening Mechanisms For Production Of Advanced High Strength Metal Alloys - This disclosure deals with a class of metal alloys with advanced property combinations applicable to metallic sheet production. More specifically, the present application identifies the formation of metal alloys of relatively high strength and ductility and the use of one or more cycles of elevated temperature treatment and cold deformation to produce metallic sheet at reduced thickness with relatively high strength and ductility. | 04-16-2015 |
| 20160053353 | HOT-ROLLED FERRITIC STAINLESS-STEEL PLATE, PROCESS FOR PRODUCING SAME, AND STEEL STRIP - Ferritic stainless steel hot rolled sheet and steel strip excellent in toughness and corrosion resistance which have a predetermined chemical composition, have a Charpy impact value at 0° C. of 10 J/cm | 02-25-2016 |
| 20160068936 | AUSTENITIC HEAT-RESISTANT CAST STEEL AND METHOD FOR MANUFACTURING THE SAME - An austenitic heat-resistant cast steel includes 0.1 to 0.6% by mass of C, 1.0 to 3.0% by mass of Si, 0.5 to 1.5% by mass of Mn, 0.05% by mass or less of P, 0.05 to 0.3% by mass of S, 9 to 16% by mass of Ni, 14 to 20% by mass of Cr, 0.1 to 0.2% by mass of N, and the balance of iron and inevitable impurities, in which a matrix structure of the austenitic heat-resistant cast steel is configured of austenite crystal grains, and a ferrite phase is dispersed and interposed between the austenite crystal grains so as to cover the austenite crystal grains. | 03-10-2016 |
