Leg length
The leg length is the distance from the toe edge to the root of the fillet weld on the part surface. It affects stress distribution and microstructure.
Physical-Chemical Mechanism of Action
The leg length determines how far the stress in the fillet weld is spread. A longer leg length leads to a more even stress distribution and prevents localized overloading.
Metallurgical Relevance & Risks in Welding
A short leg length can cause high stresses in the fillet weld, increasing the risk of cracking. An excessively long leg length can cause uneven stress and possible distortion.
Workshop Practice & Procedures
For an optimal fillet weld, a leg length of 2 to 3 mm is recommended. This ensures adequate stress distribution and minimizes the risk of cracking. For special materials or components, the leg length may vary slightly, so always create a procedure plan.