IIW IWI-C Practice Questions - IIW International Welding Inspector - Comprehensive (IWI-C) Exam

Hydrogen-induced (cold) cracking in ferritic steel welds requires the simultaneous presence of which three factors?

High heat input, austenitic structure and oxygen Diffusible hydrogen, a susceptible (hard) microstructure and tensile stress Sulphur, low restraint and preheat Copper contamination, low carbon equivalent and slow cooling

Correct Answer:

Diffusible hydrogen, a susceptible (hard) microstructure and tensile stress

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