______ is similar to HIC but is a potentially more damaging form of cracking which appears as arrays of cracks stacked on top of each other. The result is a through thickness crack that is perpendicular to the surface and is driven by high levels of stress.

With ammonia stress corrosion cracking weld hardness should not exceed _______ BHN.

Which of the following materials are affected by mechanical fatigue cracking?

Stainless steel cyclones, piping ductwork and valves in high temperature FCC regeneration service are susceptible areas for _________.

If wet electrodes or high moisture content flux weld electrodes are used to weld carbon steel, hydrogen can be charged into the steel resulting in _________.