ISO 5951:2001

Hot-rolled steel sheet of higher yield strength with improved formability

This International Standard applies to continuously hot-rolled steel sheet of higher yield strength with improved formability in the grades listed in Table 1. The steel is killed, made according to a fine grain practice and has a suitable chemical composition, which may include microalloying elements, to provide improved formability. The product is intended for applications where parts are to be fabricated requiring better formability than is provided by normal high yield strength steel sheet. It is generally used in the delivered condition.

Because of the combination of higher strength and improved formability, it is possible to obtain savings in mass along with better weldability.

This product is commonly produced in the range of thicknesses of 1,6 mm and over and widths of 600 mm and over, in coils and cut lengths.

Hot-rolled sheet less than 600 mm wide may be slit from wide sheet and will be considered as sheet.

This International Standard does not cover steel intended for boilers or pressure vessels, or steels designated as commercial quality or drawing qualities (covered in ISO 3573), or steels designated as weathering steels, having increased atmospheric corrosion resistance, or lower yield strength steels having less formability properties (covered in ISO 4995 and ISO 4996) compared with those included in this International Standard.