Abstract: A cold-rolled flat steel product for deep drawing applications including in addition to Fe and unavoidable impurities (in % by weight) C: 0.008%-0.1%, Al: 6.5%-12%, Nb: 0.1%-0.2%, Ti: 0.15-0.5%, P: <0.1%, S: <0.03%, N: <0.1% and optionally one or more elements from the group of Mn, Si, REM, Mo, Cr, Zr, V, W, Co, Ni, B, Cu, Ca, N, where 2.5?% Ti/% Nb?1.5. Also a method of producing such a flat steel product including casting a pre-product, which is then hot-rolled into a hot strip with a hot rolling end temperature of 820-1000° C. and wound at a winding temperature of up to 750° C. After winding, the hot strip is annealed at an annealing temperature of >650-1200° C. for 1-50 h, then cold-rolled in one or more stages with a total cold rolling level of ?65% and finally annealed at 650-850° C.

Abstract: Improved casting powders and improved casting slags enable production of steels having high aluminum contents of greater than or equal to 1% by weight and, in some cases, high manganese content of greater than or equal to 15% by weight. In some examples, such steels may also or alternatively include greater than or equal to 0.2% by weight titanium. The casting slag may result from a casting powder that comprises CaO and Al2O3 components essentially in the form of prefused calcium aluminate. Methods for casting steel, including methods for continuously casting steel, are also disclosed based on the use of the disclosed casting powders or casting slags.

Abstract: Improved casting powders and improved casting slags enable production of steels having high aluminum contents of greater than or equal to 1% by weight and, in some cases, high manganese content of greater than or equal to 15% by weight. In some examples, such steels may also or alternatively include greater than or equal to 0.2% by weight titanium. The casting slag may result from a casting powder that comprises CaO and Al2O3 components essentially in the form of prefused calcium aluminate. Methods for casting steel, including methods for continuously casting steel, are also disclosed based on the use of the disclosed casting powders or casting slags.

Abstract: A casting mould for casting steel melt into a continuously drawn strand is provided herein. A surface texture is formed on at least one inner surface of the casting mould facing towards the melt to be cast. The surface texture extends at least over region of the casting mould which, during operation, is wetted with slag floating on the melt that has been poured into the casting mould. The casting mould allows optimum solidification behaviour in the region of the casting mould that is critical in terms of the risk of crack formation. The surface texture is designed as a closed structure with self-contained, randomly distributed indentations.

Abstract: A cold-rolled flat steel product for deep drawing applications is disclosed, composed of a steel which, in addition to Fe and unavoidable impurities (in % by weight) contains C: 0.008%-0.1%, Al: 6.5%-12%, Nb: 0.1%-0.2%, Ti: 0.15-0.5%, P: <0.1%, S: <0.03%, N: <0.1% and optionally one or more elements from the group of “Mn, Si, REM, Mo, Cr, Zr, V, W, Co, Ni, B, Cu, Ca, N”, provided that Mn: <1%, REM: <0.2%, Si: <2%, Zr: <1%, V: <1%, W: <1%, Mo: <1%, Cr: <3%, Co: <1%, Ni: <2%, B: <0.1%, Cu: <3%, Ca: <0.015%. The ratio is 2.5 ?% Ti/% Nb ?1.5, %Ti=Ti content and % Nb=Nb content. For production of such a flat steel product, a steel of appropriate composition is cast to give a pre-product, which is then hot-rolled to hot strip at a hot rolling end temperature of 820-1000° C. The latter is subsequently wound at a winding temperature of up to 750° C., after winding annealed at an annealing temperature of >650-1200° C.

Abstract: A method for generating a flat steel product comprising the steps of: melting a steel melt, comprising, in addition to Fe and unavoidable impurities (in wt %) C: 0.5-1.3%, Mn: 18-26%, Al: 5.9-11.5%, Si: <1%, Cr: <8%, Ni: <3%, Mo: <2%, N: <0.1%, B: <0.1%, Cu: <5%, Nb: <1%, Ti: <1%, V: <1%, Ca: <0.05%, Zr: <0.1%, P: <0.04%, S: <0.04%; casting the steel melt into a cast strip; heating the cast strip to an initial hot-rolling temperature of 1100-1300° C. at a heating rate of at least 20 K/s; hot rolling the cast strip into a hot strip; cooling the hot strip within 10 seconds after the hot rolling at a cooling rate of at least 100 K/s to <400° C.; and winding the cooled hot strip into a coil at a coiling temperature of up to 400° C.