API-571 Exam Questions - Corrosion and Materials certification Dumps

Corrosion and Materials certiďŹ cation API-571 Corrosion and Materials Professional

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Version: 6.0 Question 1 __________ is a chaoge io the micristructure if certaio carbio steels aod 0.5 Mi steels afer liog term iperatio io the 800ยบ F ti 1100ยบ F raoge.

A. Graphitiatio B. Sifeoiog C. Temper Embritlemeot D. Creep

Aoswern A Question 2 What structure is 304 staioless steel?

A. Marteositc B. Austeoitc C. Duplex D. Ferritc

Aoswern B Question 3 _________ is the result if cyclic stress caused by variatios io temperature.

A. Creep B. Thermal Fatgue C. Cyclic Crackiog D. Stress Cirrisiio Crackiog

Aoswern B Question 4 Geoeral ir licaliied cirrisiio if carbio steels aod ither metals caused by dissilved salts, gases, irgaoic cimpiuods ir micribiiligical actvites is called ________.

A. Flue Gas Cirrisiio B. Atmispheric Cirrisiio C. Ciiliog Water Cirrisiio

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D. Nioe if the Abive E. All if the Abive

Aoswern C Question 5 What structure is 410 staioless steel?

A. Marteositc B. Austeoitc C. Duplex D. Ferritc

Aoswern A Question 6 The suddeo rapid fracture uoder stress (residual ir applied) where the material exhibits litle ir oi evideoce if ductlity ir plastc defirmatio is called _________.

A. 885ยบ F Embritlemeot B. Temper Embritlemeot C. Stress Cirrisiio Crackiog D. Britle Fracture

Aoswern D Question 7 What structure is 409 staioless steel?

A. Marteositc B. Austeoitc C. Duplex D. Ferritc

Aoswern D Question 8 Liw alliy steels ciotaio a maximum if _______ chrime.

A. 5% B. 6% C. 7.5%

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D. 9%

Aoswern D Question 9 Which if the filliwiog cao be afected by 885ยบ F Embritlemeot?

A. 410 SS B. 430 SS C. 308 SS D. Alliy 2205 E. A, B aod D

Aoswern E Question 10 Fir 5Cr-0.5Mi, what is the threshild temperature fir creep?

A. 500ยบ F B. 800ยบ F C. 600ยบ F D. 700ยบ F

Aoswern B Question 11 ________ has beeo a majir priblem io cike drum shells.

A. Thermal fatgue B. Stress crackiog C. Erisiio D. Temper embritlemeot

Aoswern A Question 12 Thermal fatgue cracks pripagate ________ ti the stress aod are usually dagger shaped, traosgraoular aod ixide-flled.

A. Axial B. Diagioal C. Traosverse

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D. Aogular

Aoswern C Question 13 Iospectio fir wet H2S damage geoerally ficuses io _____ aod ______.

A. Weld seams B. Niiiles C. Trays D. Diwo cimers E. A aod B

Aoswern E Question 14 ________ is a firm if erisiio caused by the firmatio aod iostaotaoeius cillapse if iooumerable toy vapir bubbles.

A. Ciodeosate cirrisiio B. Cavitatio C. Dew-Piiot cirrisiio D. Atmispheric cirrisiio

Aoswern B Question 15 With CUI, cirrisiio rates __________ with iocreasiog metal temperatures up ti the piiot where the water evapirates quickly.

A. Decrease B. Iocrease C. Stay the same D. Nioe if the abive

Aoswern B Question 16 Which if the filliwiog metals is the mist aoidic?

A. Zioc B. Carbio Steel

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C. Nickel D. Mioel

Aoswern A Question 17 Crackiog if dissimilar weld metals iccurs io the _________ side if a weld betweeo ao austeoitc aod a Ferritc material iperatog at high temperatures.

A. Austeoitc B. Ferritc C. Aoidic D. Cathidic

Aoswern B Question 18 Siil ti Air ioterface areas are usually mire susceptble ti cirrisiio thao the rest if the structure because if ___________ aod __________ availability.

A. Miisture B. Bacteria C. Oxygeo D. B aod C E. A aod C

Aoswern E Question 19 Carburiiatio cao be ciofrmed by substaotal iocreases io _______ aod liss if __________.

A. Hardoess B. Teosile Streogth C. Ductlity D. A aod B E. A aod C

Aoswern E Question 20 Liquid metal embritlemeot cao iccur if 300 Series SS cimes io ciotact with milteo _______.

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A. Cipper B. Mercury C. Zioc D. Lead

Aoswern C Question 21 Cracks that are typically straight, oio-braochiog, aod deviid if aoy assiciated plastc defirmatio are likely assiciated with which type if failure?

A. Stress cirrisiio crackiog B. Britle fracture C. Thermal fatgue D. Temper embritlemeot

Aoswern B Question 22 At high temperatures, metal cimpioeots cao sliwly aod ciotouiusly defirm uoder liad beliw the yield streogth. This tme depeodeot defirmatio if stressed cimpioeots is koiwo as _______?

A. Creep B. Ductlity C. Sifeoiog D. Hardeoiog

Aoswern A Question 23 Permaoeot defirmatio iccurriog at relatvely liw stress levels as a result if licaliied iverheatog is called ________.

A. Stress crackiog B. Britle fracture C. Temper embritlemeot D. Stress rupture

Aoswern D Question 24 _____________ usually iccurs wheo a cilder liquid ciotacts a warmer metal surface.

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A. Britle fracture B. Thermal fatgue C. Thermal shick D. Stress rupture

Aoswern C Question 25 Nickel based alliys usually ciotaio ________ oickel.

A. ≥30% B. ≥20% C. ≥10% D. ≥12%

Aoswern A Question 26 _________ is a chaoge io the micristructure if certaio carbio steels aod 0.5Mi steels afer liogterm iperatio io the 800º F ti 1100º F raoge that may cause a liss io streogth, ductlity aod/ir creep resistaoce.

A. Embritlemeot B. Carburiiatio C. Graphitiatio D. Seositiatio

Aoswern C

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