Abstract: An annealing line for a steel strip, a device for use in such an annealing line and a method for annealing a steel strip. The annealing line including a connecting chamber connecting a first heating section and a second heating section, wherein one or more devices, located in the connecting chamber, are arranged on one or both sides of the steel strip for oxidising the steel strip using an oxidising gas mixture, each device having a body including an internal chamber and one or more openings to project the oxidising gas mixture onto the surface of the steel strip.

Abstract: A steel strip having a hot dip zinc based coating, the steel strip having the following composition, in weight %: C: 0.17-0.24 Mn: 1.8-2.5 Si: 0.65-1.25 Al: ?0.3 optionally: Nb: ?0.1 and/or V: ?0.3 and/or Ti: ?0.15 and/or Cr: ?0.5 and/or Mo: ?0.3, the remainder being iron and unavoidable impurities; with a Si/Mn ratio ?0.5 and a Si/C ratio ?3.0, with an Mn equivalent ME of at most 3.5, wherein ME=Mn+Cr+2 Mo (in wt. %); having a microstructure with (in vol. %): ferrite: 0-40, bainite: 20-70, martensite: 7-30, retained austenite: 5-20, pearlite: ?2, cementite: ?1; having a tensile strength in the range of 960-1100 MPa, a yield strength of at least 500 MPa, and a uniform elongation of at least 12%.

Abstract: A steel strip having a hot dip zinc based coating, the steel strip having the following composition, in weight %: C: 0.17-0.24 Mn: 1.8-2.5 Si: 0.65-1.25 Al: ?0.3 optionally: Nb: ?0.1 and/or V: ?0.3 and/or Ti: ?0.15 and/or Cr: ?0.5 and/or Mo: ?0.3, the remainder being iron and unavoidable impurities; with a Si/Mn ratio ?0.5 and a Si/C ratio ?3.0, with an Mn equivalent ME of at most 3.5, wherein ME=Mn+Cr+2 Mo (in wt. %); having a microstructure with (in vol. %): ferrite: 0-40, bainite: 20-70, martensite: 7-30, retained austenite: 5-20, pearlite: ?2, cementite: ?1; having a tensile strength in the range of 960-1100 MPa, a yield strength of at least 500 MPa, and a uniform elongation of at least 12%.