MIG welding stainless w/ C25?

[EmptyNester]

I'm still new at this but I have seen that you should use tri-mix gas and different wire with stainless, but........

I have/typically use C25 and ER70S-6.

I have four small welds to do (each about 1"). I need to weld a tab onto each side of my gantry cross tube.



I can have a friend of my brother's do it, but it will take about a week and there's always the concern that the instructions get garbled in the hand-off.

Given that this isn't going to have a significant load on it - can I do it with C25 and ER70S-6?