FAA AMT Airframe Practice Exam 2026 – Complete Exam Prep Guide

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Which statement best describes magnesium welding?

Filler rod should be a higher melting point than the base metal

No filler rod is needed

Filler rod should be the same composition as base metal

Magnesium welding is best done using a filler rod that has the same composition as the base metal for a few reasons. Using the same composition filler rod ensures that the welded joint maintains the desired properties, such as strength and corrosion resistance. It also helps in achieving a metallurgical bond with the base metal, resulting in a stronger and more durable weld. Using a filler rod with a different composition can lead to incompatibility issues and compromise the integrity of the weld.

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Any type of filler rod can be used

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