Question

when gmaw welding on aluminum what gas is the most common? c - 100 helium argon c - 10

Explanation:

GMAW (Gas Metal Arc Welding) on aluminum typically uses argon as the shielding gas. Argon is inert and helps protect the weld pool from contamination. Helium can also be used, but argon is more common. C - 100 and C - 10 are not standard gases for GMAW on aluminum.

Answer:

Argon