Corrosion and Mechanical Durability Testing in High Temperature Molten Sulfur

Summary

The challenge for high-temperature molten sulfur thermal energy storage (TES) is identifying suitable construction materials for storage tanks, as molten sulfur can react with metals at operational temperatures of 300-400°C. This Cooperative Research and Development project investigated the corrosion resistance and mechanical properties of various steel materials exposed to molten sulfur at 400°C for over 1000 hours. The research determined that SS 304L and SS 347L demonstrated the lowest corrosion rates, with SS 304L being chosen for further cost analysis due to its economic viability, contributing to the engineering design of more durable and cost-effective TES systems.

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Source Document

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