Abstract: Provided a build-up welding material which contains C: 0.2 to 1.5 mass %, Si: 0.5 to 2 mass %, Mn: 0.5 to 2 mass %, Cr: 20 to 40 mass %, Mo: 2 to 6 mass %, Ni: 0.5 to 6 mass %, V: 1 to 5 mass % and W: 0.5 to 5 mass %, with the balance being Fe and unavoidable impurities.

Abstract: An acetone storage tank or acetone transfer pipe comprising stainless steel in which the amount of Cr is in the range 10.5 wt % to 20 wt %; the amount of Ni is ?9 wt %, and the amount of Mo is 2.75%?Mo?0 wt %, of the stainless steel.

Abstract: The invention concerns steels having excellent resistance over time, in a corrosive atmosphere due to oxidizing environments such as, for example, fumes or water vapor, under high pressure and/or temperature. The invention concerns a steel composition for special applications, said composition containing, by weight, about 1.8 to 11% of chromium (and preferably between about 2.3 and 10% of chromium), less than 1% of silicon, and between 0.20 and 0.45% of manganese. It has been found that it is possible to adjust the contents of the composition based on a predetermined model, selected to obtain substantially optimal properties with respect to corrosion in specific conditions of high temperature performances. Said model can involve as additive of as residue at least one element selected among molybdenum, tungsten, cobalt, and nickel.

Abstract: To provide a two-phase stainless steel, a thin sheet material and a diaphragm including the same capable of achieving high strength and excellent corrosion resistance as well as obtaining a smooth surface state. The two-phase stainless steel of the present invention includes a composition of Cr: 24 to 26 mass %, Mo: 2.5 to 3.5 mass %, Ni: 5.5 to 7.5 mass %, C?0.03 mass %, N: 0.08 to 0.3 mass %, remaining part: Fe and unavoidable impurities, in which 2.0 mass % or less of Mn is contained if necessary, and the particle size of inclusion particles including an Al oxide or a Mn oxide caused by unavoidable impurities Al and Mn existing in a metal structure is 3 ?m or less.

Abstract: The present invention is directed to a largely nickel-free iron alloy or a nickel-free stainless steel having the following composition: 14.0% by wt.-16.5% by wt. chromium 10.0% by wt.-12.0% by wt. manganese ?3.0% by wt.-4.00% by wt. molybdenum 0.55% by wt.-0.70% by wt. nitrogen 0.10% by wt.-0.20% by wt. carbon 0.00% by wt.-2.00% by wt. impurities, such as other metals, semimetals, metal salts and/or non-metals the rest up to 100% by wt. is iron, which is in particular suitable for the production of stents as well as to stents made of this alloy.

Abstract: Provided are a stainless steel for a proton-exchange membrane fuel cell separator having high durability and a low contact resistance (i.e., high electrical conductivity) and a proton-exchange membrane fuel cell using the same. More specifically, a stainless steel for a proton-exchange membrane fuel cell separator has a composition comprising 0.03% mass % or less of C, 16-45 mass % of Cr, 0.03 mass % or less of N, 0.1-5.0 mass % of Mo, wherein a total of the C content and the N content satisfies 0.03 mass % or less; a balance portion is comprised of Fe and unavoidable impurities; an atomic ratio of Cr/Fe with respect to Al, Cr, and Fe contained in a passive film on a surface of the stainless steel is 1 or greater.

Abstract: Disclosed is a build-up welding material and a machinery part welded with a weld overlay metal. The build-up welding material contains C of 0.2 to 1.0 percent by mass, Si of 0.2 to 0.5 percent by mass, Mn of 0.5 to 2.0 percent by mass, Cr of 15 to 30 percent by mass, Mo of 0.2 to 6.0 percent by mass, and W of 0.1 to 1.5 percent by mass, with the remainder including Fe and inevitable impurities.

Abstract: An efficient polishing method for polishing an alloy material to have an excellent mirror surface is provided. The alloy material contains a main component and 0.1% by mass or more of an element that has a Vickers hardness (HV) different from the Vickers hardness of the main component by 5 or more. A polishing composition used in the polishing method contains abrasive grains and an oxidant. The alloy material is preferably an aluminum alloy, a titanium alloy, a stainless steel, a nickel alloy, or a copper alloy. It is also preferable that the alloy material is subjected to preliminary polishing before being subjected to polishing in which the polishing composition is used.

Abstract: An austenitic stainless steel having low nickel and molybdenum and exhibiting comparable corrosion resistance and formability properties to higher nickel and molybdenum alloys comprises, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-5.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.1-0.35 N, up to 4.0 W, up to 0.01 B, up to 1.0 Co, iron and impurities, the steel having a ferrite number of less than 10 and a MD30 value of less than 20° C.

Abstract: A ferritic Cr-contained steel having a reduced thermal expansion coefficient is provided. The ferritic Cr-contained steel contains C of 0.03% or less, Mn of 5.0% or less, Cr of 6 to 40%, N of 0.03% or less, Si of 5% or less, and W of 2.0% to 6.0% in percent by mass, and Fe and inevitable impurities as the remainder, wherein precipitated W is 0.1% or less in percent by mass, and an average thermal expansion coefficient between 20° C. and 800° C. is less than 12.6×10-6/° C.

Abstract: Disclosed is a ferritic stainless steel for an EGR system, more particularly, a ferritic stainless steel for an EGR system which may suppress the ferritic stainless steel from being discolored and which improves the moldability, oxidation resistance, and corrosion resistance by including iron (Fe) as a base material, about 18 to 20% by weight of chromium (Cr) based on a total weight of an alloy, molybdenum (Mo), carbon (C) and niobium (Nb).

Abstract: A martensitic stainless steel for inexpensive seamless pipe having 655 MPa yield strength, high toughness and excellent corrosion resistance in high CO2 environments, and a method for manufacturing thereof is provided. The steel comprises C: 0.005-0.05%, Si: 0.1-0.5%, Mn: 0.1-2.0%, P: ?0.05%, S: ?0.005%, Cr: 10.0-12.5%, Mo: 0.1-0.5%, Ni: 1.5-3.0%, N: ?0.02%, Al: 0.01-0.1%, by weight, while FI value defined by the formula [FI=Cr+Mo?Ni?30(C+N)] being 5.00 to 8.49, and balance of substantially Fe. The method comprises the steps of reheating the cooled steel at temperatures from 780° C. to 960° C., quenching the reheated steel, and then tempering the quenched steel at temperatures from 550° C. to 650° C.

Abstract: Stainless steel for fuel cell separators contains C: ?0.03%, Si: ?1.0%, Mn: ?1.0%, S: ?0.01%, P: ?0.05%, Al: ?0.20%, N: ?0.03%, Cr: 16 to 40%, and one or more of Ni: ?20%, Cu: ?0.6% and Mo: ?2.5%, the balance being Fe and inevitable impurities. According to X-ray photoelectron spectroscopy, the surface of the stainless steel contains fluorine and provides a 3.0 or higher ratio of the total of atomic concentrations of Cr and Fe in other than the metallic forms calculated from data resulting from the separation of peaks of Cr and Fe into metallic peaks and peaks other than the metallic peaks to the total of atomic concentrations of Cr and Fe in the metallic forms calculated from data resulting from the separation of peaks of Cr and Fe into metallic peaks and peaks other than the metallic peaks.

Abstract: An aspect of a ferritic stainless steel contains, by mass %: C: 0.03% or less; N: 0.03% or less; Si: more than 0.1% to 1% or less; Mn: 0.02% to 1.2%; Cr: 15% to 23%; Al: 0.002% to 0.5%; and either one or both of Nb and Ti, with the remainder being Fe and unavoidable impurities, wherein Expression (1) and Expression (2) illustrated below are satisfied, an oxide film is formed on a surface thereof, and the oxide film contains Cr, Si, Nb, Ti and Al in a total cationic fraction of 30% or more, 8(C+N)+0.03?Nb+Ti?0.6??(1) Si+Cr+Al+{Nb+Ti?8(C+N)}?15.5??(2).

Abstract: A precipitation-hardened stainless steel alloy comprises, by weight: about 14.0 to about 16.0 percent chromium; about 6.0 to about 8.0 percent nickel; about 1.25 to about 1.75 percent copper; greater than about 1.5 to about 2.0 percent molybdenum; about 0.001 to about 0.025 percent carbon; niobium in an amount greater than about twenty times that of carbon; and the balance iron and incidental impurities. The alloy has an aged microstructure and an ultimate tensile strength of at least about 1100 MPa and a Charpy V-notch toughness of at least about 69 J. In one embodiment, the aged microstructure includes martensite and not more than about 10% reverted austenite. In another embodiment, the alloy includes substantially all martensite and substantially no reverted austenite. The alloy is useful for making turbine airfoils.

Abstract: The present invention provides a low-alloy high-purity ferritic stainless steel sheet provided with improved oxidation resistance and high-temperature strength by utilizing Sn addition in trace amounts without relying on excessive alloying of Al and Si which reduces fabricability and weldability or addition of rare elements such as Nb, Mo, W, and rare earths, and a process for producing the same. The high-purity ferritic stainless steel sheet includes C: 0.001 to 0.03%, Si: 0.01 to 2%, Mn: 0.01 to 1.5%, P: 0.005 to 0.05%, S: 0.0001 to 0.01%, Cr: 16 to 30%, N: 0.001 to 0.03%, Al: 0.05 to 3%, and Sn: 0.01 to 1% (% by mass), with the remainder being Fe and unavoidable impurities. A stainless steel slab having such steel components is heated, wherein an extraction temperature is 1100 to 1250° C., and a winding temperature after hot rolling is 650° C. or lower. A hot-rolled sheet is annealed at 900 to 1050° C., and cooled at 10° C./sec or less over a temperature range of 550 to 850° C.

Abstract: A ferritic stainless steel excellent in corrosion resistance and conductivity and a method for manufacturing the same, the stainless steel having a chemical composition containing, by mass %, C: 0.001% or more and 0.05% or less, Si: 0.001% or more and 0.5% or less, Mn: 0.001% or more and 1.0% or less, Al: 0.001% or more and 0.5% or less, N: 0.001% or more and 0.05% or less, Cr; 17% or more and 23% or less, Mo: 0.1% or less and the balance being Fe and inevitable impurities and a passivation film on the surface of the stainless steel which is obtained by immersing the stainless steel in a solution for an immersion treatment, said solution mainly contains hydrofluoric acid or a liquid mixture of hydrofluoric acid and nitric acid.

Abstract: Provided is a martensitic stainless steel having excellent productivity and high corrosion resistance, which comprises, as percentages by weight, 0.45 to 0.60% carbon, 0.02 to 0.08% nitrogen, 0.2 to 0.4% silicon, 0.3 to 0.6% manganese, 12 to 15% chrome, one or more kinds of 0.1 to 1.5% molybdenum or 0.1 to 1.5% tungsten and Fe and other unavoidable impurities as remnants.

Abstract: A work piece for use in abrasive environments with hardbanding is provided. The work piece has at least a protective layer deposited onto at least a portion to be protected. The deposited layer exhibits a hardness of at least 50 Rc, a wear rate of less than 0.5 grams of mass loss as measured according to ASTM G65-04, Procedure A, a wear rate on a contacting secondary body comprising carbon steel of less than 0.005 grams as measured according to modified ASTM G77 wear test. The deposited alloy forms an iron matrix comprising embedded hard particles in an amount of less than 15 vol. %. The embedded hard particles have an average particle size of ranging from 100 nm to 5 ?m. In one embodiment, the deposition is via welding.

Abstract: Stainless steel alloys for fabricating endoprostheses. Endoprostheses can include a variety of devices such as staples, orthodontic wires, heart valves, filter devices, and stents, many of which devices are diametrically expandable devices.

Abstract: A master alloy used to produce the steel part and a process for producing a sinter hardened steel part from the master alloy are described. The powdered master alloy having a composition of iron, about 1 to less than 5 weight % C, about 3 to less than 15 weight % Mn, and about 3 to less than 15 weight % Cr, wherein the master alloy comprises a microstructure composed of a solid solution of the alloying elements and carbon, the microstructure comprising at least 10 volume % austenite and the remainder as iron compounds. The process comprises: preparing the master alloy, mixing the master alloy with a steel powder to produce a mixture wherein the weight % of the master alloy is from 5 to 35 weight % of the mixture, compacting the mixture into a shape of a part and sintering the mixture to produce the steel part, and controlling the cooling rate after sintering to produce sinter hardening. The master alloy powder can also be used as a sinter hardening enhancer when mixed with low-alloy steel powders.

Abstract: This martensitic stainless steel contains, in terms of percent by mass: C: 0.003% to 0.03%; Si: 0.01% to 1.0%; Mn: 3.0% to 6.0%; P: 0.05% or less; S: 0.003% or less; Ni: 1.0% to 3.0%; Cr: 15.0% to 18.0%; Mo: 0% to 1.0%; Cu: 0% to 2.0%; Ti: 0% to 0.05%; N: 0.05% or less; Al: 0.001% to 0.1%; and O: 0.005% or less, with a remainder being Fe and inevitable impurities, wherein a total amount of C and N is in a range of 0.060% or less, ?max represented by the formula 1 is in a range of 80 or more, and ?pot represented by the formula 2 is in a range of 60 to 90. ?max=420×C %+470×N %+23×Ni %+9×Cu %+7×Mn %?11.5×Cr %?11.5×Si %?52×Al %+189??Formula 1 ?pot=700×C %+800×N %+10×(Mn %+Cu %)+20×Ni %?9.3×Si %?6.2×Cr %?9.3×Mo %?74.4×Ti %?37.2×Al %+63.2??Formula 2 Here, C %, N %, Ni %, Cu %, Mn %, Cr %, Si %, A1%, Mo %, and Ti % represent the contents (mass %) of the respective elements.

Abstract: An austenitic stainless steel having low nickel and molybdenum and exhibiting comparable corrosion resistance and formability properties to higher nickel and molybdenum alloys comprises, in weight %, up to 0.20 C, 2.0-9.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 1.0-5.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.1-0.35 N, up to 4.0 W, up to 0.01 B, up to 1.0 Co, iron and impurities, the steel having a ferrite number of less than 10 and a MD30 value of less than 20° C.

Abstract: A method of manufacturing a hot press-hardened component comprises the following production steps: a) providing a steel product produced at least in sections from a stainless steel comprising of the following composition (specified in % wt.) C: 0.010-1.200%, P: up to 0.1%, S: up to 0.1%, Si: 0.10-1.5%, Cr: 10.5-20.0% and optionally one or more elements from the group “Mn, Mo, Ni, Cu, N, Ti, Nb, B, V, Al, Ca, As, Sn, Sb, Pb, Bi, H” with the requirement Mn: 0.10-3.0%, Mo: 0.05-2.50%, Ni: 0.05-8.50%, Cu: 0.050-3.00%, N: 0.01-0.2%, Ti: up to 0.02%, Nb: up to 0.1%, B: up to 0.1%, V: up to 0.2%, Al: 0.001-1.50%, Ca: 0.0005-0.003%, As: 0.003-0.015%, Sn: 0.003-0.01%, Sb: 0.002-0.01%, Pb: up to 0.01%, Bi: up to 0.01%, H: up to 0.

Abstract: The present invention provides a duplex stainless steel having excellent resistance to alkalis and particularly corrosion resistance against high-temperature concentrated alkali solutions and excellent weldability. The duplex stainless steel has a chemical composition comprising, in mass %, C: at most 0.03%, Si: at most 0.5%, Mn: at most 2.0%, P: at most 0.04%, S: at most 0.003%, Cr: at least 25.0% to less than 28.0%, Ni: at least 6.0% to at most 10.0%, Mo: at least 0.2% to at most 3.5%, N: less than 0.5%, W: at most 3.0%, and a remainder of Fe and impurities.

Abstract: An austenitic stainless steel sheet for springs having both a high strength and excellent formability has a chemical composition comprising C: 0.01-0.15%, Si: at most 3.0%, Mn: at most 3.0%, Cr: 10.0-30.0%, Ni: 4.0-20.0%, N: at most 0.40%, and a remainder of Fe and impurities, and it has a metallurgical structure such that the austenite content ?s (%) in the surface region of the steel sheet and the austenite content ?c (%) in the center region of the sheet thickness satisfy (?s+?c)/2?55 and ?s/?c?0.10, with the remaining structure being primarily strain-induced martensite.

Abstract: The present invention relates to a cast steel alloy for producing cast parts with ferritic structure, wherein the alloy contains iron (Fe), carbon (C), chromium (Cr) and molybdenum (Mo). An increased resistance to intercrystalline corrosion is obtained when the alloy additionally contains titanium (Ti) and niobium (Nb).

Abstract: There is provided a novel bearing steel composition and a method of forming a bearing. The bearing steel composition comprises: Carbon 0.4 to 0.8 wt %; Nitrogen 0.1 to 0.2 wt %; Chromium 12 to 18 wt %; Molybdenum 0.7 to 1.3 wt %; Silicon 0.3 to 1 wt %; Manganese 0.2 to 0.8 wt %; and Iron 78 to 86.3 wt %.

Abstract: Various embodiments relate to interconnects for solid oxide fuel cells (“SOFCs”) comprising ferritic stainless steel and having at least one via that when subjected to an oxidizing atmosphere at an elevated temperature develops a scale comprising a manganese-chromate spinel on at least a portion of a surface thereof, and at least one gas flow channel that when subjected to an oxidizing atmosphere at an elevated temperature develops an aluminum-rich oxide scale on at least a portion of a surface thereof. Other embodiments relate to interconnects comprising a ferritic stainless steel and having a fuel side comprising metallic material that resists oxidation during operation of the SOFCs, and optionally include a nickel-base superalloy on the oxidant side thereof. Still other embodiments relate to ferritic stainless steels adapted for use as interconnects comprising ?0.1 weight percent aluminum and/or silicon, and >1 up to 2 weight percent manganese. Methods of making interconnects are also disclosed.

Abstract: The present invention provides, as a material superior in heat resistance in a hot environment where the maximum temperature of the exhaust gas becomes 750 to 900° C., ferritic stainless steel sheet superior in heat resistance in a broad temperature region of 750 to 900° C. with long term stability by a smaller amount of addition of Mo than SUS444 containing about 2% of expensive Mo, that is, ferritic stainless steel sheet superior in heat resistance characterized by containing, by mass %, C: 0.01% or less, N: 0.02% or less, Si: 0.05 to 1%, Mn: 0.1 to 2%, Cr: 10 to 30%, Mo: 0.1 to 1%, Cu: 1 to 2%, Nb: 0.2 to 0.7%, Ti: 0.01 to 0.3%, and B: 0.0002 to 0.0050%, having a balance of Fe and unavoidable impurities, and having a 0.2% yield strength at 750° C. of 70 MPa or more.

Abstract: A precipitation-hardened stainless steel alloy comprises, by weight: about 14.0 to about 16.0 percent chromium; about 6.0 to about 7.0 percent nickel; about 1.25 to about 1.75 percent copper; about 0.5 to about 2.0 percent molybdenum; about 0.025 to about 0.05 percent carbon; niobium in an amount greater than about twenty times to about twenty-five times that of carbon; and the balance iron and incidental impurities. The alloy has an aged microstructure and an ultimate tensile strength of at least about 1100 MPa and a Charpy V-notch toughness of at least about 69 J. The aged microstructure includes martensite and not more than about 10% reverted austenite and is useful for making turbine airfoils.

Abstract: An alloy comprising about 0.5 weight percent to about 2 weight percent carbon, about 15 weight percent to about 30 weight percent chromium, about 4 weight percent to about 12 weight percent nickel, up to about 3 weight percent manganese, up to about 2.5 weight percent silicon, up to about 1 weight percent zirconium, up to about 3 weight percent molybdenum, up to about 3 weight percent tungsten, up to about 0.5 weight percent boron, up to about 0.5 weight percent impurities, and iron.

Abstract: The present invention provides: a ferritic stainless steel cast iron including: Fe as a main component; C: 0.20 to 0.40 mass %; Si: 1.00 to 3.00 mass %; Mn: 0.30 to 3.00 mass %; Cr: 12.0 to 30.0 mass %; and one of Nb and V, or both of Nb and V in total: 1.0 to 5.0 mass %, the ferritic stainless steel cast iron satisfying the following formula (1): 1400?1562.3?{133WC+14WSi+5WMn+10(WNb+WV)}?1480??(1) wherein, WC (mass %), WSi (mass %), WMn (mass %), WCr (mass %), WNb (mass %), WV (mass %) and WCu (mass %) are contents of C, Si, Mn, Cr, Nb, V and Cu, respectively; a process for producing a cast part from the ferritic cast steel; and the cast part.

Abstract: The invention relates to a stainless steel product, particularly to a duplex stainless steel casting with high machinability, to the use of the product and to the method to produce the product. The product contains in weight percent up to 0.07% carbon, up to 2% silicon, 3-8% manganese, 19-23% chromium, 0.5-1.7% nickel, up to 1% of molybdenum and/or tungsten with the formula (Mo+½W) less than 1%, up to 1% copper and 0.15-0.30% nitrogen, the remainder being iron and incidental impurities.

Abstract: The invention concerns steels having excellent resistance over time, in a corrosive atmosphere due to oxidizing environments such as, for example, fumes or water vapour, under high pressure and/or temperature. The invention concerns a steel composition for special applications, said composition containing, by weight, about 1.8 to 11% of chromium (and preferably between about 2.3 and 10% of chromium), less than 1% of silicon, and between 0.20 and 0.45% of manganese. It has been found that it is possible to adjust the contents of the composition based on a predetermined model, selected to obtain substantially optimal properties with respect to corrosion in specific conditions of high temperature performances. Said model can involve as additive of as residue at least one element selected among molybdenum, tungsten, cobalt, and nickel.

Abstract: A steel composition contains: 0.05% or less of C; 0.5% or less of Si; 0.20% to 1.80% of Mn; 0.03% or less of P; 0.005% or less of S; 14.0% to 18.0% of Cr; 5.0% to 8.0% of Ni; 1.5% to 3.5% of Mo; 0.5% to 3.5% of Cu; 0.05% or less of Al; 0.20% or less of V; 0.01% to 0.15% of N; and 0.006% or less of O on a mass basis, and satisfies the following expressions: Cr+0.65Ni+0.6Mo+0.55Cu?20C?18.5 and Cr+Mo+0.3Si?43.5C?0.4Mn?Ni?0.3Cu?9N?11 (where Cr, Ni, Mo, Cu, C, Si, Mn, and N represent their respective contents (mass %)). After such a steel pipe material is formed into a steel pipe, the steel pipe is quenched by cooling after heating to a temperature of the AC3 transformation point or more and tempered at a temperature of the AC1 transformation point or less.

Abstract: An alloy to be surface-coated, which can keep excellent hardness of 58HRC or above even when the amount of an alloying element added is reduced or even when the alloy is heated to a temperature of as high as 400 to 500° C.; and sliding members produced by forming a hard film on the surface of the alloy. An alloy to be surface-coated, the surface of which is to be covered with a hard film, which alloy contains by mass C: 0.5 to 1.2%, Si: 2.0% or below, Mn: 1.0% or below, Cr: 5.0 to 14.0%, Mo+1/2 W: 0.5 to 5.0%, and N: more than 0.015 to 0.1% with the balance being Fe and impurities, preferably such an alloy which contains by mass C: 0.6 to 0.85%, Si: 0.1 to 1.5%, Mn: 0.2 to 0.8%, Cr: 7.0 to 11.0%, Mo+1/2 W: 1.0 to 4.0%, and N: 0.04 to 0.08%.

Abstract: In an intermediate piece for connecting molded articles of manganese steel with carbon steel, in particular austenitic manganese steel casting frogs with standard rails, the intermediate piece is comprised of steel from the group of austenitic-ferritic duplex steels having a ferrite portion of <60 wt %. The method for connecting austenitic manganese steel castings with standard rails is characterized in that an austenitic-ferritic intermediate piece made of duplex steel comprising <60% ferrite is welded with the manganese steel casting and the standard rail.

Abstract: A martensitic stainless steel having a resistance to sulfide stress corrosion cracking superior to Super 13 Cr steel and having a strength and corrosion resistance comparable to dual phase stainless steels has a chemical composition consisting essentially of, in mass %, C: 0.001-0.1%, Si: 0.05-1.0%, Mn: 0.05-2.0%, P: at most 0.025%, S: at most 0.010%, Cr: 11-18%, Ni: 1.5-10%, sol. Al: 0.001-0.1%, N: at most 0.1%, O: at most 0.01%, Cu: 0-5%, solid solution Mo: 3.5-7%, the composition satisfying the following Equation (1), optionally at least one element selected from at least one of the following Groups A-C, and a remainder of Fe and impurities and undissolved Mo, if undissolved Mo is present. Ni-bal.=30(C+N)+0.5(Mn+Cu)+Ni+8.2?1.1(Cr+Mo+1.5Si)??4.5??Equation (1) Group A—W: 0.2-5% Group B—V: 0.001-0.50%, Nb: 0.001-0.50%, Ti: 0.001-0.50%, and Zr: 0.001-0.50% Group C—Ca: 0.0005-0.05%, Mg: 0.0005-0.05%, REM: 0.0005-0.05%, and B: 0.0001-0.01%.

Abstract: Oxidation-resistant ferritic steel alloys for high temperature applications consist essentially of chromium (Cr) in an amount from about 18 to about 25 atom percent, tungsten (W) in an amount from about 0.5 to about 2 atom percent, manganese (Mn) in an amount less than about 0.8 atom percent, aluminum (Al) in an amount less than about 0.2 atom percent, silicon (Si) in an amount less than about 0.1 atom percent, and rare earth metals that includes neodymium (Nd) in an amount from about 0.002 to about 0.2 atom percent with the balance being iron (Fe). Also disclosed herein are solid oxide fuel cells that include separators formed for the oxidation resistant ferritic alloys.

Abstract: A piston ring material that when formed into a piston ring product, maintains excellent properties, and that at the production of piston ring rod, realizes excellent processability and shape stability. There is provided a piston ring material for internal combustion engine comprising, by mass, 0.5 to less than 0.7% C, 1.0% or less Si, 1.0% or less Mn, 12.0 to 16.0% Cr, 3.0% or less Mo and/or W (Mo+1/2W), 0.02 to 0.14% N and the balance Fe and unavoidable impurities, wherein the relationship of contained C, N and Cr satisfies the formulae: 25?43.22C (%)+42.45N (%)?0.02Cr (%)<40, and 0.15 <0.92C (%)+0.67N (%)?0.03Cr (%)<0.30.

Abstract: The present invention relates to the use of a comparatively cheap material for the containment of at least a strongly acidic mineral acid solution highly diluted with water, by means of which saccharides are extracted from lignocellulose material by hydrolysis at a temperature of 175-240° C. and a pressure of 6-34 bar (0.6-14 MPa) as well as a time of 1-60 minutes and is characterized in that the material comprises, in addition to iron in an amount greater than any other individual substance and usually at least 50% by weight, at least chromium in an amount of 10.5-30% by weight, nickel in an amount of 2.5-29% by weight, and molybdenum in an amount of 0-7% by weight. The invention also relates to an apparatus.

Abstract: 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 a martensite parent phase which forms a solid solution with carbon of 0.15 to 0.5 wt %, and the martensite parent phase contains one or more types of each special carbide of Cr, Mo, W and V dispersed therein in a total content of 10 to 50% by volume.

Abstract: A ball pin or ball socket made of stainless steel with the following composition: 10.5 to 13 wt.-% of chromium, 0.005 to 0.3 wt.-% of carbon, maximum 0.015 wt.-% of sulfur, 0.2 to 1 wt.-% of silicon, 0.2 to 1 wt.-% of manganese with a balance of the composition being iron.

Abstract: The invention relates to a ferritic alloy composition. In one aspect, the ferritic alloy composition comprises about 16 to 20 wt. % Cr, about 7 to 11 wt. % Mo, and the balance Fe. In another aspect, the ferritic composition comprises about 10 to 14 wt. % Cr, about 7 to 11 wt. % Mo or about 10 to 20 wt. % W, and the balance Fe.

Abstract: An annealed prealloyed water atomised iron-based powder is provided which is suitable for the production of pressed and sintered components having high wear resistance. The iron-based powder comprises 15-30% by weight of Cr, 0.5-5% by weight of each of at least one of Mo, W and V, and 0.5-2%, preferably 0.7-2% and most preferably 1-2% by weight of C. The powder has a matrix comprising less than 10% by weight of Cr, and comprises large chromium carbides. A method for production of the iron-based powder also is provided.

Abstract: A martensitic stainless steel sheet having superior corrosion resistance, toughness at the weld zones, and workability. The composition of the steel sheet is, on a mass basis: less than about 0.02% of carbon; about 1.0% or less of silicon; less than about 1.5% of manganese; about 0.04% or less of phosphorus; about 0.01% or less of sulfur; about 0.1% or less of aluminum; about 1.5% or more and less than about 4.0% of nickel; about 11% or more and less than about 15% of chromium; about 0.5% or more and less than about 2.0% of molybdenum; and less than about 0.02% of nitrogen, the balance being iron and unavoidable impurities, wherein 15.0%?[Cr]+1.5×[Mo]+1.2×[Ni]?20.0%; [C]+[N]<0.030%; [Ni]+0.5×([Mn]+[Mo])+30×[C]>3.0%; and 8.0%?72×[C]+40×[N]+3×[Si]+2×[Mn]+4×[Ni]+[Mo]?18.0%.

Abstract: Disclosed are a weld joint and a stainless steel-based weld metal composition for the weld joint. The composition and weld joint made therefrom are suitable for welding a zinc-based alloy coated steel sheet. The weld is excellent in corrosion resistance and liquid-metal embrittlement crack resistance. This is accomplished by inhibiting liquid-metal embrittlement cracks of the stainless-steel-based weld metal when the zinc-based alloy coating steel sheet is welded using the stainless-steel-based weld metal. The weld joint comprises a welded portion of weld metal made of stainless-steel-based components, the weld metal containing in mass percent (%): C: 0.01-0.1; Si: 0.1-1; Mn: 0.5-2.5; Ni: 5-11; and Cr: 17-25, and the balance being iron and residual impurities, wherein the following expression are met: ?0.81×Cr equivalent+23.2?Ni equivalent?0.95×Cr equivalent?8.1 . . . (1); Ni equivalent=Ni+30×C+0.5×Mn+30×N . . . (2); Cr equivalent=Cr+Mo+1.5×Si . . . (3).

Abstract: A brake disk excellent in temper softening resistance and toughness comprising, by mass, 0.1% or less of C, 1.0% or less of Si, 2.0% or less of Mn, 10.5% to 15.0% of Cr, and 0.1% or less of N, the remainder being Fe and unavoidable impurities, such that the following inequalities are satisfied: 5Cr+10Si+15Mo+30Nb?9Ni—5Mn—3Cu?225N?270C<45 (1) and 0.03?{C+N?(13/92)Nb}?0.09 (2) wherein Cr, Si, Mo, Nb, Ni, Mn, Cu, N, and C each represent the content of the corresponding elements on a mass percent basis, and having a martensitic structure having prior-austenite grains with an average diameter of 8 to less than 15 ?m.

Abstract: For making a rustproof golf club head economically in an environment friendly manner without electroplating to facilitate ball control, a metal alloy is disclosed containing carbon (C) 0.08% max, silicon (Si) 1.5% max.manganese (Mn) 1.5% max, chrome (Cr) 16˜28%, nickel (Ni) 1% max, cerium (Ce) 1.5% max, phosphor (P) 0.03% max, sulfur (S) 0.02%, and iron to make 100%.