Miller Multimatic 200 Owner's Manual page 54

9-16. Common GMAW (MIG) Shielding Gases
This is a general chart for common gases and where they are used. Many different combinations (mixtures) of shielding gases have been developed
over the years. The most commonly used shielding gases are listed in the following table.
Gas
Spray Arc
Steel
Argon
Flat &
Argon + 1% O
2
Horizontal Fillet
Flat &
Argon + 2% O
2
Horizontal Fillet
Argon + 5% Flat &
CO Horizontal Fillet
2
Argon + 10% Flat &
CO Horizontal Fillet
2
Argon + 25%
CO
2
Argon + 50%
CO
2
CO
2
Helium
Argon +
Helium
2
Tri-Mix
1 Heavy Thicknesses
2 90% HE + 7-1/2% AR + 2-1/2% CO
OM-253392 Page 50
Short Spray Arc
Circuiting Stainless
Steel Steel
Flat &
Horizontal Fillet
Flat &
Horizontal Fillet
All Positions
All Positions
All Positions
All Positions
2
Application
Short
Circuiting Spray Arc
Stainless Aluminum
Steel
All Positions
1
All Positions
1
All Positions
All Positions
Short
GMAW-P
Circuiting
Aluminum
All Positions All Positions
All Positions
All Positions
All Positions
All Positions