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Learn why water droplet erosion develops on low-pressure steam turbine blade leading edges, how repeated high-velocity droplet impact damages blade profiles, and how Cobalt Alloy 6 and 6B protection strips are used in wet-steam stages.

Steam turbine blades operate in extreme environments with high temperatures, corrosive media, and mechanical stresses. Over time, corrosion and wear degrade blade performance, leading to efficiency losses and costly maintenance. To address these challenges, Alloy 6B/UNS R30016 is a superior material for wear strips and protective overlays on steam turbine blades. This cobalt-chromium-tungsten alloy complies with AMS 5894, combining unmatched corrosion resistance, high-temperature stability, and mechanical durability. This article explores the root causes of turbine blade corrosion and the criteria for material selection.