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length of weld formula. Fillet weld legs determine fillet weld sizes. The formula for calculating arc length in degrees is A 0360 x D x r.
The area of the excess weld metal is approximated by the formula W x h2. The maximum size of fillet weld will be 07 x T where T is the base metal thickness. S Thikness or Fillet Size mm Fillet Weld Volume mm Lenght of Welding mm.
In case of dissimilar thickness we should consider the thinner base metal thickness.
Air liquide Welding proposes to go further with the comparative calculation that will help you to make up your mind to pick up the best value for your choice of welding process. Weld length as shown in Fig. Fillet Weld Volume x Lenght of Welding 1000. An example t-joint is shown below with a weld size of 38 on 12 plates.