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MMA electrode depositing advanced 9CrMoV alloy with nominal composition 0.12%C-9.5%Cr-1.5%Mo- 1%Co-0.25%V-0.05%Nb+B. Low hydrogen moisture resistant flux covering on high purity steel core wire. Metal recovery is about 120% with respect to the core wire, and 65% with respect to the whole electrode. Applications COST alloy B2 was originally developed as a turbine rotor material and its outstanding creep performance (above P91 and E911) has been confirmed with further optimisation. The weld metal deposited by Chromet WB2 is designed to match the base material composition quite closely for fabricating thick wall components used in the construction of power plants operating with advanced steam parameters up to at least 600°C. Specification AWS A5.5: E9015-G (WB2)