Abstract: A steel alloy with excellent creep strength and corrosion resistance that is ferritic at usage temperatures above 620° C. has the following chemical composition (in wt. %): C?1.0%; Si?1.0%; Mn?1.0%; P max. 0.05%; S max. 0.01%; 2?Al?12%; 3?Cr?16%; 2?Ni?10% and/or 2?Co?10%, where 2?Ni+Co?[% Cr]+2.07×[% Al]>=0.95×([% Ni]+[% Co]); N max. 0.0200%. The remainder is iron with steel production-related impurities. Optionally, one or more elements of V, Ti, Ta, Zr, Nb, Mo and W, as well as one or more elements of Hf, B, Se, Y, Te, Sb, La and Zr with a cumulative content of <0.1% can be added. The steel structure includes uniformly distributed coherent precipitates based on a chromium-stabilized (Ni, Co)Al—B2 intermetallic ordered phase.

Abstract: A steel alloy with excellent creep strength and corrosion resistance that is ferritic at usage temperatures above 620° C. has the following chemical composition (in wt. %): C?1.0%; Si?1.0%; Mn?1.0%; P max. 0.05%; S max. 0.01%; 2?Al?12%; 3?Cr?16%; 2?Ni?10% and/or 2?Co?10%, where 2?Ni+Co?[% Cr]+2.07×[% Al]>=0.95×([% Ni]+[% Co]); N max. 0.0200%. The remainder is iron with steel production-related impurities. Optionally, one or more elements of V, Ti, Ta, Zr, Nb, Mo and W, as well as one or more elements of Hf, B, Se, Y, Te, Sb, La and Zr with a cumulative content of <0.1% can be added. The steel structure includes uniformly distributed coherent precipitates based on a chromium-stabilized (Ni, Co) Al-B2 intermetallic ordered phase.

Abstract: A method for operating a mobile navigation device in a vehicle. The vehicle is equipped with a radio device and wherein the navigation device encompasses at least one device for generating maneuvering instructions and a transmitter device for generating radio signals and wherein signals can be transmitted by the navigation device to the receiving part of the radio device by means of the transmitter device. The method includes the following method steps: a) computing a maneuvering display including a maneuvering instruction, which is to be displayed graphically; b) encoding the maneuvering display as a radio signal; and c) transmitting the maneuvering display, which is encoded as a radio signal, by the transmitter device of the navigation device, for transmitting the maneuvering display to the radio device.