Abstract: A metal sheet component including (in % by weight) C: up to 0.5%, Si: 0.05-1%, Mn: 4-12%, Cr: 0.1-4%, Al: up to 3.5%, N: up to 0.05%, P: up to 0.5%, S: up to 0.01%, Cu, Ni: in total up to 2%, Ti, Nb, V: in total up to 0.5%, rare earth metals: up to 0.1%, and as a remainder, Fe and unavoidable impurities, wherein the content % C of C and the content % Cr of Cr meet the following condition: (10×% C)+% Cr<5.5%. In order to manufacture a metal sheet component, a flat steel product is heated to a heating temperature, which is at least 200° C. and at most 800° C., and then formed into the component by hot forming the flat steel product heated to the heating temperature, with the structure of the hot-formed metal sheet component having 5-50% by volume austenite and, as the remainder, martensite, tempered martensite and/or ferrite, wherein the ferrite proportion can also be 0, and the average grain diameter of the structure is less than 5 ?m.

Abstract: A process may be utilized to produce a galvannealed Zn—Mg hot dip coating that provides improved corrosion protection on a steel substrate, and to a flat steel product having such characteristics. To this end, a steel substrate may be subjected to hot dip coating in an Fe-saturated melt bath heated to 350-650° C., wherein the melt bath comprises in percent by weight 0.1-0.16% Al, 0.1-0.6% Mg, and also <2% Si, <1% each of Ni or Cu, <0.3% Co, <0.0001% Mn, <0.5% Sr, <0.1% each of Pb, B, Bi or Cd, <0.2% each of REM, Ti or Cr, or <0.5% Sn, with the balance being zinc and unavoidable impurities. Further, a galvannealing treatment may be conducted in which the steel substrate is kept at 450-800° C. for 10-25 seconds to produce a galvannealed Zn—Mg hot dip coating on the steel substrate. The coating may comprise Zn, unavoidable impurities, and in percent by weight 0.10-0.5% Al, 5.0-15.0% Fe, 0.10-0.8% Mg and <2 % Si, <1% each of Ni, Cu, <0.3% Co, <0.0001% Mn, <0.5% Sr, <0.

Abstract: An apparatus for heat treatment of coated semi-finished steel products may comprise a heatable continuous furnace having a conveyer for moving the coated semi-finished steel products. The conveyer may be comprised of a plurality of conveyer elements, such as rollers, for example, for supporting the coated semi-finished steel products. To prevent, or at least substantially prevent, interaction between semi-finished steel products having different coatings, a decoupling portion of the continuous furnace may include a first conveyer element group and a second conveyer element group, each having at least one conveyer element. The coated semi-finished steel products may be supported in the decoupling portion either by the conveyer elements of the first conveyer element group or by the conveyer elements of the second conveyer element group.

Abstract: An apparatus for heat treatment of coated semi-finished steel products may comprise a heatable continuous furnace having a conveyer for moving the coated semi-finished steel products. The conveyer may be comprised of a plurality of conveyer elements, such as rollers, for example, for supporting the coated semi-finished steel products. To prevent, or at least substantially prevent, interaction between semi-finished steel products having different coatings, a decoupling portion of the continuous furnace may include a first conveyer element group and a second conveyer element group, each having at least one conveyer element. The coated semi-finished steel products may be supported in the decoupling portion either by the conveyer elements of the first conveyer element group or by the conveyer elements of the second conveyer element group.