True or False: Graphite pencils can damage the assembly materials and cause corrosion.

Graphite pencils can indeed pose a risk to assembly materials and may lead to corrosion. This is primarily due to the conductive properties of graphite. When graphite is used on certain surfaces, especially in environments where moisture or humidity is present, it can create pathways for electrical conductivity. This can lead to galvanic corrosion if the assembly involves dissimilar metals that are in contact with each other, particularly when moisture is introduced.

Additionally, the potential for graphite residue to accumulate and become abrasive during assembly processes could affect the integrity of materials. This abrasive quality can scratch or damage surfaces, leading to exposure of substrates that may be more susceptible to corrosion.

While there are conditions where the impact of graphite pencils might be negligible, the general understanding is that they should be avoided in aerospace assembly work due to the risks associated with their use. Therefore, considering the properties of graphite and the environment in which aerospace assemblies operate, the assertion that graphite pencils can damage assembly materials is true.