Cwb Welding Inspection Practice Test & Exam Prep

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Which of the following combinations of factors represents the four necessary conditions for Hydrogen-Induced Cracking (HIC) to occur in a steel weldment?

High hydrogen level, high residual stress, susceptible microstructure, temperature below 150°C High hydrogen level, compressive stress, austenitic microstructure, temperature above 200°C Low hydrogen level, high carbon equivalent, ferritic microstructure, PWHT High hydrogen level, high heat input, low restraint, ambient temperature

Correct Answer:

High hydrogen level, high residual stress, susceptible microstructure, temperature below 150°C

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