SA213-T91 steel with inferior welding performance is used on end superheater of domestic-made 600MW subcritical boil- er.

In power industry, SA213-T91 steel are widely used in superheater and reheater of utility boiler.

Research on T91 steel refining technology through EAF-LF-VD process route;

Transient liquid phase bonding of T91 steel using two-step heating process;

Effect of process parameters on the microstructures and properties of T91 steel TLP joint;

Discussion about the method of life assessment for steel T91;

Study on Hot-piercing Performance of Steel T91 for High Pressure Boiler Service;

In this paper, the microstructure features in the welded metal and heat affected zone of heat-resistant steel T91, which was welded by different processes, are analyzed through metallography and SEM techniques.

As a new type of Austenitic base heat resistant steel,the SA213-Super304H and HR3C steel has been adopted in domestic ultra-supercritical units.

The influence of technological parameter such as preheat temperature, heat treatment temperature, weld heat input and welding consumable on the weld of T91/P91 steel was synthetically analysed by means of SMAW during the course of welding process.

The study and development of T91/P91 steel and the main performance index were introduced in this paper.

With the SCRI model,reliability-based creep-rupture life prediction of T91/P91 steels was performed,whereas the reliability of creeprupture life prediction evaluated in consideration of the dispersivity of functional data and fluctuation of service conditions.