What is the assumed efficiency percentage of a butt welding?

In conjunction with the practice of butt welding, at which two pieces of metal are joined together flatly and aligned edge-to-edge, the efficiency percentage is often assumed to be around 90%. This percentage reflects the realistic expectations in terms of material properties and the integrity of the weld created during the process.

When analyzing the strength of welded joints, the 90% efficiency factor serves to account for potential flaws that may arise from the welding process, such as incomplete fusion, misalignment, or other defects that can compromise the overall strength. It establishes a conservative approach to design, ensuring that safety and reliability standards are met in engineering applications.

Comparing this with other assumed efficiencies shows that higher values, such as 95%, 98%, or 92%, suggest an optimism in weld quality that may not assume the same likelihood of error as the 90% benchmark does. This makes the 90% figure a widely accepted standard in various engineering contexts when calculating the load-bearing capacity of welded components.