This article presents the results of the statistical research of the mechanical properties of sheets of Polish grades DX51D, DX52D and DX53D, made of low carbon steel for cold forming, continuously hot-dip coated. DX-type sheets, in particular DX51D, produced according to standard EN 10346 , can be used, inter alia, to produce corrugated metal sheets and sandwich panels. Standard EN 10346  does not give at all, or gives in the form of very wide intervals, strength parameters for sheets of DX type. Characteristic and design values of yield strength and tensile strength have been presented in the article. Also, the values of partial factors for DX-type steel have been analyzed.