Use of weldable high strength Cr-Ni-Mo-Ti steel as a stainless construction steel for products having a high longevity

摘要

The composition of the steel of the mixed structure of perlite with iron element is: the Mo of titanium up to 0.6% Ni 0.2 to 1.5% Cr 1.0 to 3.0% Mn 13.0 to 16.0% Si up to 2.0% C up to 1.Up to the 0. of 0%10% remainder life is pressed with common accompanying element, is at least 13.The total of 5% % Cr+% Mo. It is generated in the form of through the heat of the thermo-mechanical treatment process limited or cold-rolled forming section product, the combination of the high temperature deformation on the one hand limited, its with subsequent stress relief annealing in the case where the deformed end temperature or another aspect thermal deformation reduced in the range of 650 to 800 degrees Celsius under the control in 600 to 800 degrees Celsius of temperature range and annealed raw material cold deformation limits degree of deformation in the range of 10 to 30%, as a special steels, its 0. at least 420 N/ millimeters2or at least 600 N/ millimeters2of region for limiting differenceThe minimum value of 2 limits. Investment goods and cargo of the steel especially suitable for the long-life used in everyday, wherein requiring be coupled in good corrosion resistance one to increase intensity and bending strength and/or pressure mottling resistance.