For a correctly made weld, what should the bead width be relative to the thickness of the base metal?

The correct answer highlights the ideal relationship between the width of a weld bead and the thickness of the base metal. For a properly executed weld, the bead width being 3 to 5 times the thickness of the base metal is crucial for ensuring a strong and durable joint. This ratio promotes adequate penetration and fusion of the materials being welded, which contributes to the overall integrity and strength of the weld.

When the bead width falls within this range, it allows for sufficient molten material to flow and fuse the edges of the base metal effectively. This ensures that the joint can withstand the operational stresses it will encounter. A bead that is too narrow could indicate insufficient penetration, risking a lack of strength in the joint, while an excessively wide bead may lead to problems such as distortion or weakening of the base metal. Therefore, conforming to the right range of bead width is essential in welding practice to maintain quality and reliability in the fabrication of airframe and powerplant components.