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High-chromium alloy resists aqueous corrosion: improvements in alloy metallurgy, melting...

An advanced super-austenitic, high-chromium 6 Mo alloy called alloy 31 (UNS N08031) bridges the cost/performance gap between high-performance Ni-Cr-Mo alloys and the 300 series stainless steels. It is especially suitable as a material of construction for the modern chemical process and petrochemical industries, where materials must not only resist uniform corrosion caused by a range of corrodents, but also must have effective resistance to localized corrosion and stress corrosion cracking in halide and other media.

This article describes the development of Alloy 31, its

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