Which of the following best describes the term "filler metals"?

The term "filler metals" refers to materials used in welding processes that are added to the weld joint to enhance the strength and overall quality of the weld. This additional metal fills the joint between the base materials, effectively providing a stronger bond by ensuring that all parts of the joint are properly fused together.

Filler metals help to create a sound weld, which is critical to the integrity of the completed structure. They can also help compensate for any gaps or irregularities in the base materials, ensuring a more uniform welded joint. This characteristic is paramount in various applications where structural integrity is essential for performance and safety.

In contrast, materials that need to be removed after welding typically refer to slag or excess material that does not contribute to the cohesive strength of the weld. Decorative metals might be used for aesthetic enhancements but do not serve the structural purpose of filler metals. Lastly, while filler metals do play a role in supporting the structure of the weld, their primary function is to improve the bond between the main components rather than being purely for structural support.