Originally Posted by Don Cook
Steel frames are TIG welded because it lessens the costs of production. It can be done robotically. It is arguable as to whether or not it weighs any less. Brazing must be done by hand, one frame at a time.
One of the reasons 853 steel is desirable is that TIG welding actually increases the material strength at the weld site.
The down side of TIG vs Brazing is that the heat from welding will distort the frame which then has to be straightened. Brazing happens at a lower temperature without the level distortion of welding.