Abstract: A silicon alloyed steel for hot rolling and a process of hot rolling the silicon alloyed steel is provided. The process includes providing a steel slab having a chemical composition in weight percent within a range of 0.06-0.30 C, 0.3-2.0 Mn, 0.6-3.5 Si, and Fe plus incidental melting impurities. The steel slab is hot rolled and hot rolled steel strip is produced. The hot rolled steel strip is coiled at temperatures between 100-600° C. and has a microstructure containing at least 90 vol % ferrite plus pearlite, a yield strength of at least 400 megapascals (MPa), a tensile strength of at least 600 MPa, and a tensile elongation of at least 20%.

Abstract: In order to achieve a rigid connecting node of profiles (1, 2) comprising steel plate, especially a frame structure of a vehicle body from the point of view of lightweight construction, one profile (2) consisting of two parallel belts (2a, 2b) and at least one connecting cross-piece (2c, 2d) grips with its two ends (2a*, 2b*), which project compared with the connecting cross-piece (2c, 2d), the other profile (1) having two parallel wall sections (1a, 1b), wherein the belt ends (2a*, 2b*) which abut flat against the wall sections (1a, 1b) are fixedly connected to the wall sections (1a, 1b), for example, by means of a welded joint (4a, 4b, 4c). Such a connecting node offers multiple compensation for tolerances and imparts the frame structure a high stiffness.