Abstract: Creep-proof and corrosion-resistant nickel-based alloy for the use in high-temperature technology, comprising in wt-%: 0.0015 to 0.60 carbon (C); 0.20 to 0.90 nitrogen (N); 22.0 to 32.0 chromium (Cr); 5.0 to 20.0 elements of group 4, 5, and 6 of the periodic table, except Cr; 0.03 to 3.0 aluminum (Al); 0.4 to 3.0 silicon (Si); up to 0.15 elements of group 3 of the periodic table, except actinoids; up to 0.60 manganese (Ma); up to 14.8 iron (Fe); up to 0.01 boron (B); a maximum of 0.014 phosphorus (P); a maximum of 0.004 sulfur (S); a minimum of 51 nickel (Ni) or a combination of nickel (Ni) and cobalt (Co); and melting-related impurities.

Abstract: Low-nickel austenitic steel which contains iron and the following components: Manganese: less than 17.0% by weight; Chromium: more than 21.0 and not more than 26.0% by weight; Molybdenum: less than 1.50% by weight; Nitrogen: more than 0.70 and not more than 1.70% by weight; and Carbon: more than 0.11 and not more than 0.70% by weight and its production and use.

Abstract: The invention relates to an nickel-poor austenitic steel containing iron and the following components: manganese: less than 9.0% by weight; chrome: less than 16 and a maximum of 22% by weight; nitrogen: more than 0.30 and a maximum of 0.70% by weight; carbon: more than 0.08 and a maximum of 0.30% by weight and silicon: less than 2.0% by weight. The invention also relates to the production and utilization of said steel.

Abstract: Hard sintered moldings having a nickel- and cobalt-free, nitrogen-containing steel as a binder of the hard phase, processes for the powder metallurgical production of these hard sintered moldings, in particular by powder injection molding, and powder injection molding materials for the production of these hard sintered moldings by powder injection molding.

Abstract: In a process for producing a workpiece from a chromium alloy, consisting of: 32-37 % by weight chromium, 28-36 % by weight nickel, max. 2 % by weight manganese, max. 0.5 % by weight silicon, max. 0.1 % by weight aluminum, max. 0.03 % by weight carbon, max. 0.025 % by weight phosphorus, max. 0.01 % by weight sulfur, max. 2 % by weight molybdenum, max. 1 % by weight copper, 0.3-0.7 % by weight nitrogen, remainder iron and production-related admixtures and impurities, the workpiece is cold worked and, by means of the cold working, is brought to a yield strength of at least 1000 MPa (Rp0.2≧1000 MPa).

Abstract: In a process for producing a workpiece from a chromium alloy, consisting of: 1 32-37 % by weight chromium, 28-36 % by weight nickel, max. 2 % by weight manganese, max. 0.5 % by weight silicon, max. 0.1 % by weight aluminum, max. 0.03 % by weight carbon, max. 0.025 % by weight phosphorus, max. 0.01 % by weight sulfur, max. 2 % by weight molybdenum, max. 1 % by weight copper, 0.3-0.

Abstract: In a process for producing a workpiece from a chromium alloy, consisting of:  32-37 % by weight chromium,  28-36 % by weight nickel, max. 2 % by weight manganese, max. 0.5 % by weight silicon, max. 0.1 % by weight aluminum, max. 0.03 % by weight carbon, max. 0.025 % by weight phosphorus, max. 0.01 % by weight sulfur, max. 2 % by weight molybdenum, max. 1 % by weight copper, 0.3-0.7 % by weight nitrogen, remainder iron and production-related admixtures and impurities, the workpiece is cold worked and, by means of the cold working, is brought to a yield strength of at least 1000 MPa (Rp≧1000 MPa).

Abstract: The invention relates to a creep-proof and corrosion-resistant nickel-based alloy for the use in high-temperature technology, comprising in wt-%

Abstract: A fully martensitic quenching and tempering steel (AP) essentially consists of (measured in % by weight): 8 to 15% of Cr, up to 15% of Co, up to 4% of Mn, up to 4% of Ni, up to 8% of Mo, up to 6% of W, 0.5 to 1.5% of V, up to 0.15% of Nb, up to 0.04% of Ti, up to 0.4% of Ta, up to 0.02% of Zr, up to 0.02% of Hf, at most 50 ppm of B, up to 0.1% of C and 0.12-0.25% of N, the content of Mn+Ni being less than 4% and the content of Mo+W being less than 8%, the remainder being iron and usual impurities resulting from smelting.

Abstract: The heat- and creep-resistant steel has a martensitic microstructure produced by a heat-treatment process. The composition of the steel in percent by weight is as follows:0.001-0.05 of carbon0.05-0.5 of silicon0.05-2.0 of manganese0.05-2.0 of nickel8.0-13.0 of chromium0.05-1.0 of molybdenum1.00-4.0 of tungsten0.05-0.5 of vanadium0.01-0.2 of niobium2.0-6.5 of cobalt0.1-0.3 of nitrogen,the remainder being iron and unavoidable impurities. Such a steel can be produced by forging, casting or by powder-metallurgical means. Components fabricated from this steel show a high strength and ductility at room temperature and are distinguished at temperatures of 600.degree. C. and higher by a very high creep strength and an unusually high oxidation resistance. They can therefore be used with advantage as mechanically and thermally highly stressed components in steam- and/or gas-operated power stations.