Which of the following are considerations when selecting a filler metal?

When selecting a filler metal for welding, it is essential to consider the chemical composition and tensile strength of the filler material. The chemical composition is critical because it must be compatible with both the base material and the desired properties of the joint. This ensures that the weld does not introduce unwanted elements that could lead to degradation of the weld's performance or corrosion resistance.

Tensile strength is another vital consideration as it determines how much load a weld can withstand before failing. The filler metal should possess a tensile strength that meets or exceeds the requirements of the base materials being joined to ensure the integrity and durability of the weld.

By focusing on these aspects, welders ensure that the joint can perform adequately under service conditions, contributing to the overall safety and longevity of the welded structure. It's crucial for maintaining proper mechanical properties and integrity of the welded joint.