In this paper, a detailed analysis was performed to define the variance between both Nickel alloys 825 and 625 Multi-alloys. A comprehensive experiment and testing was done to evaluate both mechanical and chemical properties for the flanges with weld overlay, fittings and pipe components. The results of the study indicated several challenges and the gaps between both materials. Therefore, an initiative was led to promote the current process in order to prevent reoccurrence and mitigate associated consequences of failure by investigating and defining the root cause analysis. In order to ensure bridging the gaps, the paper concludes with a list of recommendations for the actions taken towards the material and vendor quality in order to proceed forward with the corrective actions and precautions for utilization whenever different PMI readings are found in cladding to continue supplying high quality products as expected.

Subject
Materials, Corrosion resistant alloys, Diffusion, Nickel based alloys, Welding, Wiring, Inspection, Flanges, Chemical composition, Heat, Equipment, Corrosion resistance, Alloys
Keywords:
Nickel Alloys, Weld Overlay, Diffusion Rate, Chemical Composition
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2019
Association for Materials Protection and Performance (AMPP)
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