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Question 1
In a C-Mn steel weld, which microconstituent forming in the weld metal is generally most beneficial to low-temperature toughness?
Correct Answer:
Acicular ferrite
Question 2
Hydrogen-induced (cold) cracking in ferritic steel welds requires the simultaneous presence of which three factors?
Correct Answer:
Diffusible hydrogen, a susceptible (hard) microstructure and tensile stress
Question 3
Solidification (hot) cracking in the weld metal is most strongly promoted by high levels of which residual elements forming low-melting-point films?
Correct Answer:
Sulphur and phosphorus
Question 4
Using the IIW carbon equivalent CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15, a steel with C 0.18, Mn 1.2, Cr 0.10, Mo 0.05, V 0, Ni 0.10, Cu 0.10 has a CEV closest to:
Correct Answer:
0.41
Question 5
Which test is used specifically to assess a steel plate's susceptibility to lamellar tearing by measuring through-thickness ductility?
Correct Answer:
Short transverse (through-thickness) tensile reduction-of-area test
Question 1
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About this Exam

Prepare with the IIW IWI-C Practice Questions - IIW International Welding Inspector - Comprehensive (IWI-C) Exam practice quiz. This question bank includes 100 questions covering steel, weld, welding, cracking, and because. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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IIW IWI-C Practice Questions - IIW International Welding Inspector - Comprehensive (IWI-C) Exam

This practice set contains 100 questions from the matching question bank and focuses on steel, weld, welding, cracking, and because. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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