Part-66 Module 6 Practice Questions - EASA Part-66 Module 06 - Materials and Hardware Exam - Part-66 Module 6 Practice Questions - EASA Part-66 Module 06

Question 1

In the SAE/AISI four-digit steel designation system used for aircraft alloy steels, what does the FIRST digit of the number '4130' indicate?

The carbon content as a percentage of weight The heat-treatment temper applied to the steel The minimum tensile strength in ksi on the label The major alloying element class (chrome-moly group)

Correct Answer:

The major alloying element class (chrome-moly group)

Question 2

In the steel designation 4130, what do the last two digits ('30') represent?

0.30% carbon content 30% chromium content A hardness of 30 HRC 30 ksi yield strength

Correct Answer:

0.30% carbon content

Question 3

Which heat-treatment process consists of heating a steel to above its critical temperature and then cooling it SLOWLY (typically in the furnace) to produce a soft, ductile, machinable structure and relieve internal stress?

Quench hardening Nitriding Annealing Tempering

Correct Answer:

Annealing

Question 4

After a steel component has been quench-hardened it is too brittle for service. Which process is applied to reduce that brittleness and toughen the part while retaining most of its hardness?

Annealing Normalising Tempering Carburising

Correct Answer:

Tempering

Question 5

Nitriding and carburising are both used on aircraft steel parts. What is their primary purpose?

To soften the core of the component for machining To increase corrosion resistance by forming an oxide layer To remove all internal stresses before welding To harden the surface (case) while keeping a tough core

Correct Answer:

To harden the surface (case) while keeping a tough core

Question 1

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Prepare with the Part-66 Module 6 Practice Questions - EASA Part-66 Module 06 - Materials and Hardware Exam practice quiz. This question bank includes 100 questions covering corrosion, steel, aluminium, aircraft, and such. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Part-66 Module 6 Practice Questions - EASA Part-66 Module 06 - Materials and Hardware Exam

This practice set contains 100 questions from the matching question bank and focuses on corrosion, steel, aluminium, aircraft, and such. 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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Part-66 Module 6 Practice Questions - EASA Part-66 Module 06 - Materials and Hardware Exam

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