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Mechanical Engineering Welding / CSWIP · English

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Mechanical Engineering Welding / CSWIP Easy English

Inspection for hydrogen cracking is often specified to be done between 48 to 72 hrs after completion of the weld, this is because?

A. The stress level will have reduced by then

B. it is the maximum time it takes for all the H2 to diffuse out of the weld

C. Usually after 48 hrs such cracking is unlikely to occur

D. It is to ensure the weld has properly cooled down to ambient temperature

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