Metrode Chromet-10MW description: Electrodes for the new European creep-resistant steel E911, which is essentially the ASTM P91 type with 1%W added to increase creep strength for service up to at least 600°C. These consumables are mainly intended for castings, which have a slightly higher Cr level. Castings also have up to 1%Ni to suppress retained ferrite; in wrought products nickel is limited to 0.4%. For microstructural control and to optimise toughness after PWHT, the weld metal has about 0.6%Ni added.
Applications for E911 steels include components such as headers, main steam piping, boiler tubes, turbine casings and steam valves in fossil fuelled power generating plants. It may also find future use in oil refineries and coal liquefaction and gasification plants.