The outlet system of a steam methane reforming unit, depending on design, normally consists of a combination of wrought components and cast components used in a welded construction. Proper functioning of the outlet unit is dependent on the in-service performance of these components. Both cast (UNS N08151) and wrought (UNS N08810/N08811) metallurgies have been used for outlet components. Based on a literature survey, the microstructural features responsible for material performance, the various microstructural alterations occurring in service and its impact on serviceability as well as repair weldability as well as examples of failures are reviewed. Some of the potential areas for further technical improvements are identified and summarized.

Subject
Materials, Carbides, Tubes, Manifolds, Weldments, Welding, Lead, Weldability, Repair, Creep, Alloys, Wrought metals, Ductility
Keywords:
Centrifugal casting, Heat Resistant Alloys, Steam Methane Reformer, Creep resistance, ductility after ageing, Repair weldability, Carbide Precipitation
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2017
Association for Materials Protection and Performance (AMPP)
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