API-571 Exam Question 171
With sulfuric acid corrosion, mix points with _______ cause heat to be released and high corrosion rates can occur where the acid becomes diluted.
API-571 Exam Question 172
Nitriding begins above ________ and becomes severe above _______.
API-571 Exam Question 173
________ significantly increases the probability and severity of blistering, HIC and SOHIC damage.
API-571 Exam Question 174
Thermal fatigue cracks usually initiate on the _________ of the component. They are generally wide and filled with oxides due to the elevated temperatures.
API-571 Exam Question 175
Hardness is primarily an issue with SSC. Typical low strength carbon steels should be controlled to produce weld hardness less than ________.