Design of 10%Cr martensitic steels for improved creep resistance in power plant applications

The drive to increase the efficiency of fossil fired power generation to reduce CO2 emissions and to conserve energy resources has led Tata Steel to design new 10%Cr martensitic compositions for use at temperatures of 620°C and above with creep properties superior to steel 92 (9%Cr, 0·5%Mo, and 2%W), which is the best currently available steel of this type. In the new alloys, the chromium content was set at 10% to ensure the required oxidation...