Abstract: A steek suitable for structural components used in contact with liquid lead or liquid lead alloys in nuclear reactors consisting of in weight % (wt. %): C 0.02-0.09; Si 0.1-1.6; Mn 1.5-3.0; Cr 9.0-12.0; Ni 10.0-16.8; Al 2.0-3.4; Ti 0.1-1.0; Nb?0.5; V?0.5; Ta?1.5; Y?0.5; Mo?1.5; W?1.5; Cu?1.7; N?0.06; Co?1.0; B?0.1; Zr?0.5; Hf?0.5; RE?0.2; Ca?0.1; Mg?0.1; Bi?0.1; SE?0.1 and balance Fe apart from impurities, wherein the content of RE does not include the amount of Y but only the amount of the elements having an atomic numbers 21 and 57-71, wherein the steel fulfils one or more of the following requirements: CrEq=18.5-21 and NiEq=11-20 wherein CrEq=Cr+3Al+2Si+1.5[(Ti+Nb+V+Ta+Zr)?4.5(C+N)] and NiEq=Ni+0.5((Mn+Cu+Co). 5-25 volume % delta ferrite.

Abstract: The invention relates to a steel for structural components used at elevated temperatures. The steel comprises the following main components (in wt. %): Cr 8.0-14.0 Ni 4.0-14.0 Al 2.5-5.0 C 0.003-0.3 N?0.06 Mo+W?4.0 at least one of: Nb 0.01-1.0 Ta 0.01-1.0 Ti 0.01-1.0 Zr 0.01-1.0 Hf 0.01-1.0 Y 0.05-1.0 balance optional elements, Fe and impurities; and the steel composition fulfilling the following condition: Cr(eq)+Ni(eq)?30; where Cr(eq)=Cr+2Al+1.5(Si+Nb+Ti)+Mo+0.5W; and Ni(eq)=Ni+10(C+N)+0.5(Mn+Cu+Co).

Abstract: The invention relates to a steel for structural components used at elevated temperatures. The steel comprises the following main components (in wt. %): Cr 8.0-14.0 Ni 4.0-14.0 Al 2.5-5.0 C 0.003-0.3 N?0.06 Mo+W?4.0 at least one of: Nb 0.01-1.0 Ta 0.01-1.0 Ti 0.01-1.0 Zr 0.01-1.0 Hf 0.01-1.0 Y 0.05-1.0 balance optional elements, Fe and impurities; and the steel composition fulfilling the following condition: Cr(eq)+Ni(eq)?30; where Cr(eq)=Cr+2Al+1.5(Si+Nb+Ti)+Mo+0.5W; and Ni(eq)=Ni+10(C+N)+0.5(Mn+Cu+Co).

Abstract: A nuclear reactor, in particular a liquid-metal-cooled nuclear reactor, includes a main vessel with a hot leg and a cold leg, the cold leg encompassing the hot leg; a core submerged in the hot leg; at least one heat exchanger; at least one primary fluid circulation pump pressurizing one of the legs; a reactor lid; a gas plenum; and an inner lid provided beneath the reactor lid to cover the pressurized leg.

Abstract: A ferritic alloy comprising in weight %: C: 0.01-0.1; N: 0.001-0.1; O: ?0.2; B: ?0.01; Cr: 9.0-13.0; Al: 2.5-8.0; Si: ?0.5; Mn: ?0.4; Y: ?2.2; Sc+Ce+La: ?0.2; Mo+W: ?4.0; Ti: ?1.7; Zr: ?3.3; Nb: ?3.3; V: ?1.8; Hf+Ta+Th: ?6.5; the balance being Fe and unavoidable impurities, wherein, the amounts of Ti+Zr+Nb+V+Hf+Ta+Th and C, N and O are balanced such that: at ? ? % ? ? Ti + at ? ? % ? ? Zr + at ? ? % ? ? Nb + at ? ? % ? ? V + at ? ? % ? ? Hf + at ? ? % ? ? Ta + at ? ? % ? ? Th - x * at ? ? % ? ? O - at ? ? % ? ? N at ? ? % ? ? C ? 1 wherein x is 0.5 unless the content of Y is more than or equal to 0.01 wt % then x is 0.67.

Abstract: A ferritic alloy comprising in weight %: C: 0.01-0.1; N: 0.001-0.1; O: ?0.2; B: ?0.01; Cr: 9.0-13.0; Al: 2.5-8.0; Si: ?0.5; Mn: ?0.4; Y: ?2.2; Sc+Ce+La: ?0.2; Mo+W: ?4.0; Ti: ?1.7; Zr: ?3.3; Nb: ?3.3; V: ?1.8; Hf+Ta+Th: ?6.5; the balance being Fe and unavoidable impurities, wherein, the amounts of Ti+Zr+Nb+V+Hf+Ta+Th and C, N and O are balanced such that: at ? ? % ? ? Ti + at ? ? % ? ? Zr + at ? ? % ? ? Nb + at ? ? % ? ? V + at ? ? % ? ? Hf + at ? ? % ? ? Ta + at ? ? % ? ? Th - x * at ? ? % ? ? O - at ? ? % ? ? N at ? ? % ? ? C ? 1 wherein x is 0.5 unless the content of Y is more than or equal to 0.01 wt % then x is 0.67.

Abstract: A ferritic alloy comprising in weight %: C: 0.01-0.1; N: 0.001-0.1; O: ?0.2; B: ?0.01; Cr: 9.0-13.0; Al: 2.5-8.0; Si: ?0.5; Mn: ?0.4; Y: ?2.2; Sc+Ce+La: ?0.2; Mo+W: ?4.0; Ti: ?1.7; Zr: ?3.3; Nb: ?3.3; V: ?1.8; Hf+Ta+Th: ?6.5; the balance being Fe and unavoidable impurities, wherein, the amounts of Ti+Zr+Nb+V+Hf+Ta+Th and C, N and O are balanced such that: at ? ? % ? ? Ti + at ? ? % ? ? Zr + at ? ? % ? ? Nb + at ? ? % ? ? V + at ? ? % ? ? Hf + at ? ? % ? ? Ta + at ? ? % ? ? Th - x * at ? ? % ? ? O - at ? ? % ? ? N at ? ? % ? ? C ? 1 wherein x is 0.5 unless the content of Y is more than or equal to 0.01 wt % then x is 0.67.

Abstract: In closed cooling water systems of the kind where deionized and usually deaerated cooling water comes into contact with copper or copper alloys, the formation of scales, depositions due to general copper corrosion is eliminated by the addition of H2 to the cooling water system. The product formed in anoxic (O2-free) water may be described as CuOyHx, but this product can be reduced and, thus, avoided if a sufficient amount of hydrogen is supplied. The life of the stator coil copper pipe for cooling water in an electric generator can be extended significantly by this invention, which is applicable also to other fields, such as closed cooling water systems for particle accelerators and nuclear fusion reactors (such as ITER), for example. In addition, the maintenance cost for such water cooling systems in contact with copper metal will be reduced drastically.

Abstract: The invention relates to a canister (1) for final repository of spent fuel elements from a nuclear reactor, comprising an insert (2) that contains said spent fuel elements, an inner copper casing (4a, 4b, 4c) that encloses the insert (2), and at least one outer casing (5a, 5b, 5c) that encloses the copper casting and that consists of a passive-film-forming metal or metal alloy, the passive film on the casing being constituted by an essentially oxidic film that is rich in one or more of the metals in the group of metals that consist of the metals zirconium, chromium and titanium.

Abstract: The invention relates to a canister (1) for final repository of spent fuel elements from a nuclear reactor, comprising an insert (2) that contains said spent fuel elements, an inner copper casing (4a, 4b, 4c) that encloses the insert (2), and at least one outer casing (5a, 5b, 5c) that encloses the copper casting and that consists of a passive-film-forming metal or metal alloy, the passive film on the casing being constituted by an essentially oxidic film that is rich in one or more of the metals in the group of metals that consist of the metals zirconium, chromium and titanium.

Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0-15 Si 0-6 Mg 0-6 one or more of the group of Rare Earth Metal (REM), yttrium, hafnium, zirconium, lanthanum, cerium) up to 0.3 wt. % each; Cu balance; and normally occurring alloying additions and impurities. Related articles of manufacture and methods are also described.

Abstract: A product resistant or immune to carburization, metal dusting, coking, oxidation, and having sufficient mechanical strength for use at temperatures greater than 400° C. The product consists of a load-bearing member and a corrosion resistant member, wherein the corrosion resistant member is a Cu—Al-alloy comprising Si. The product can be used in CO-containing atmospheres, and/or hydrocarbon containing atmospheres or solid carbon containing processes. A method of resisting carburization, metal dusting, coking and oxidation is also disclosed.

Abstract: A copper-base alloy with increased melting point above 1000° C., which is resistant or immune to carburization, metal dusting and coking, resistant to oxidation at elevated temperatures. The alloy has the following composition (in weight-%): Al 4–15, Si 0.1–6, Mo 0.5–40, W 0–40, where the total of Mo and W do not exceed 40%, one or more of the group of Rare Earth Metals (REM), such as yttrium, hafnium, zirconium, lanthanum and/or cerium, up to 1.0 weight-% of each element or a total of maximum 3.0 weight-%, Cu balance and normally occurring alloying additions and impurities. A method for the alloy's production, and the alloy's use as construction components in CO-containing atmospheres, ammonia containing atmospheres, and/or hydrocarbon containing atmospheres or solid carbon containing processes, are also disclosed.

Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0–15 Si 0–6 Mg 0–6 one or more of the group of Rare Earth Metal (REM), yttrium, hafnium, zirconium, lanthanum, cerium) up to 0.3 wt. % each; Cu balance; and normally occurring alloying additions and impurities. Related articles of manufacture and methods are also described.

Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %): Al >0-15 Si 0-6 Mg 0-6 one or more of the group of Rare Earth Metal (REM), yttrium, hafnium, zirconium, lanthanum, cerium) up to 0.3 wt. % each; Cu balance; and normally occurring alloying additions and impurities. Related articles of manufacture and methods are also described.

Abstract: A copper-base alloy with increased melting point above 1000° C., which is resistant or immune to carburization, metal dusting and coking, resistant to oxidation at elevated temperatures. The alloy has the following composition (in weight-%): Al 4-15, Si 0.1-6, Mo 0.5-40, W 0-40, where the total of Mo and W do not exceed 40%, one or more of the group of Rare Earth Metals (REM), such as yttrium, hafnium, zirconium, lanthanum and/or cerium, up to 1.0 weight-% of each element or a total of maximum 3.0 weight-%, Cu balance and normally occurring alloying additions and impurities. A method for the alloy's production, and the alloy's use as construction components in CO-containing atmospheres, ammonia containing atmospheres, and/or hydrocarbon containing atmospheres or solid carbon containing processes, are also disclosed.

Abstract: A product resistant or immune to carburization, metal dusting, coking, oxidation, and having sufficient mechanical strength for use at temperatures greater than 400° C. The product consists of a load-bearing member and a corrosion resistant member, wherein the corrosion resistant member is a Cu—Al-alloy comprising Si. The product can be used in CO-containing atmospheres, and/or hydrocarbon containing atmospheres or solid carbon containing processes. A method of resisting carburization, metal dusting, coking and oxidation is also disclosed.

Abstract: A copper base alloy, which is resistant or immune to carburization, metal dusting and coking, and resistant to oxidation, the alloy having the following composition (all contents in weight %):