This document summarizes a study on applying corrosion-resistant alloys in the upstream oil and gas industry to optimize costs. It discusses how selecting alloys with higher strength allows for thinner walls, less material usage, and potentially lower costs. A case study evaluates alternatives to austenitic UNS S31603 for drilling riser lines, considering corrosion resistance, mechanical properties, and alloying element prices. It determines that duplex and super duplex grades can meet pressure requirements while saving weight and costs compared to S31603. The study emphasizes a full life cycle analysis is needed to properly justify material selection based on both acquisition and operational costs.