Metrode Chromet-12MV description: Chromet 12MV deposits high strength martensitic weld metal of nominally 0.2%C-12%Cr-1%Mo modified with vanadium and tungsten. The alloying is balanced with a small addition of nickel to ensure a fully martensitic microstructure. 12%CrMoV steels are used for critical heat and creep resisting service up to at least 550ºC. The high chromium level confers superior steam and fireside corrosion performance compared with 2-9%CrMo creep-resisting steels. Used in cast and wrought form for high pressure steam piping and headers, heat exchangers and turbine components, particularly in the power generation industry and sometimes in petrochemical applications.