API-571 Sample Questions & Answers
Topics move from mechanical failure modes like brittle fracture and creep, through uniform and localized metal loss, corrosion at high temperatures, cracking caused by the surrounding environment, and corrosion from strong acids like HCl and HF.
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- Question 1Intermediate
General or localized corrosion of carbon steels and other metals caused by dissolved salts, gases, organic compounds or microbiological activities is called ________. A.Flue Gas CorrosionB.Atmospheric CorrosionC.Cooling Water CorrosionD.None of the AboveE.All of the Above
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Correct answer: C
- Question 2Intermediate
What structure is 410 stainless steel? A.MartensiticB.AusteniticC.DuplexD.Ferritic
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Correct answer: A
- Question 3Intermediate
The sudden rapid fracture under stress (residual or applied) where the material exhibits little or no evidence of ductility or plastic deformation is called _________. A.885º F EmbrittlementB.Temper EmbrittlementC.Stress Corrosion CrackingD.Brittle Fracture
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Correct answer: D
- Question 4Intermediate
What structure is 409 stainless steel? A.MartensiticB.AusteniticC.DuplexD.Ferritic
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Correct answer: D
- Question 5Intermediate
Low alloy steels contain a maximum of _______ chrome. A.5%B.6%C.7.5%D.9%
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Correct answer:
- Question 6Intermediate
Which of the following can be affected by 885º F Embrittlement? A.410 SSB.430 SSC.308 SSD.Alloy 2205E.A, B and D
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Correct answer: E
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