Materials thinner than 3 mm present a challenge, but it can be done.
It is possible to weld thinner materials using the K-TIG Welding System using conventional weld parameters, including current and travel speeds.
Materials that are thinner than 3 mm |0.118 " present challenges to the keyhole hole TIG process because of the high levels of thermal conductivity generally tend to collapse a keyhole quickly.
Compensating this with an increase in travel speed also tends to have a destabilising effect on the keyhole.