Stress corrosion cracking manganese

An example of a nickel-based alloy that is resistant to stress-corrosion cracking is inconel. Inconel is composed of 72% nickel, 14-17% chromium, 6-10% iron, and small amounts of manganese, carbon, and copper. 

R.C. Newman, W. Zheng, R.P.M. Procter, Stress-corrosion cracking of carbon-manganese steeb in methanol-ammonia environments—II. Electrochemical and fractographic studies, Corros. Sci. 

The American Petroleum Institute and the National Association of Corrosion Engineers publish documents that indicate whether weldments made with certain wire/flux combinations have experienced failure in HjS environments under conditions in which failures were unexpected. Weldments with high manganese and silicon contents have been shown to be very susceptible to sulfide stress cracking at levels of hardness at or below 22 HRC, even after thermal treatments. 

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