UNS S38815 — High-Silicon Austenitic Stainless Steel
Introduction UNS S38815 is a high-silicon, chromium-nickel austenitic stainless steel developed for demanding high-temperature and highly corrosive environments — particularly hot, concentrated sulfuric acid, sulfidizing atmospheres, and furnace/retort applications. Its unusually high silicon content (≈5–6.5%) produces a protective silica/chromia scale that improves resistance to carburization, sulfidation and scaling at elevated temperatures while maintaining good corrosion […]






