The following chart will help you choose the shielding gas best suited for your welding job considering the material to be welded, its section thickness and the process used. In case multiple gases are found to be suitable, they are mentioned in descending order of preference.

Carbon Manganese and Low-alloy steels
Austenitic Stainless Steels
Aluminium
Copper
Copper Alloys (GMA brazing)
Nickel & nickel alloys
Titanium

Material Welded : Carbon - Manganese & Low-alloy steels

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING Thin Argoshield Light Specshield Ar-O2-3 (oily surfaces) Pureshield Argon   Medium Argoshield Universal Pureshield Argon   Heavy Argoshield Heavy Specshield Ar-CO2-1&2 (FCAW & QT steels) Pureshield Argon Pureshield Argon Specshield Ar-H2-3

Note
Section thickness : Thin = 1-4 mm, Medium = 2-12 mm, Heavy = 10 mm and above.

Top

Material Welded : Austenitic Stainless Steels

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING Thin Stainshield Plus Stainshield Stainshield TIG Pureshield Argon Pureshield Argon, Specshield Ar-H2-3 Medium Stainshield Universal Stainshield Plus Stainshield Stainshield TIG Pureshield Argon, Specshield Ar-H2-1 (mechanised welding) Pureshield Argon, Specshield Ar-H2-3 Heavy Stainshield Universal Stainshield TIG Specshield Ar-H2-2 (mechanised welding) Pureshield Argon, Specshield Ar-H2-3

Note
Section thickness : Thin = 1-4 mm, Medium = 2-12 mm, Heavy = 10 mm and above.

Top

Material Welded : Aluminium

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING Thin Specshield Ar-He-1 Pureshield Argon Specshield Ar-He-1 Pureshield Argon Pureshield Argon, Specshield Ar-H2-3 Medium Specshield Ar-He-2 Pureshield Argon Specshield Ar-He-2 Pureshield Argon Pureshield Argon, Specshield Ar-H2-3 Heavy Specshield Ar-He-3 Pureshield Argon Specshield Ar-He-3 Pureshield Argon Pureshield Argon, Specshield Ar-H2-3

Note
Section thickness : Thin = 1-4 mm, Medium = 2-12 mm, Heavy = 10 mm and above.

Top

Material Welded : Copper

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING Light Pureshield Argon Specshield Ar-He-2 Pureshield Argon Specshield Ar-He-2 Pureshield Argon, Specshield Ar-H2-3 Heavy Pureshield Argon Specshield Ar-He-2 Pureshield Argon Specshield Ar-He-3 Pureshield Argon, Specshield Ar-H2-3

Note
Section thickness : Light = 1-9 mm, Heavy = 10 mm and above.

Top

Material Welded : Copper Alloys (GMA brazing)

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING All Specshield Ar-O2-1 Pureshield Argon Specshield Ar-He-1 Pureshield Argon, Specshield Ar-H2-3

Top

Material Welded : Nickel & nickel alloys

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING All Pureshield Argon Specshield Ar-He-1 Pureshield Argon Specshield Ar-He-1 Pureshield Argon, Specshield Ar-H2-3

Top

Material Welded : Titanium

Section Thickness Welding / Cutting Process GMAW GTAW PLASMA CUTTING Light Iolar-1 Argon, Specshield Ar-He-1 Iolar-1 Argon, Specshield Ar-He-1 Pureshield Argon, Specshield Ar-H2-3 Heavy Iolar-1 Argon Specshield Ar-He-2 Iolar-1 Argon, Specshield Ar-He-2 Pureshield Argon, Specshield Ar-H2-3

Note
Section thickness : Light = 1-9 mm, Heavy = 10 mm and above.

Top

BOC India Limited is a member of the BOC Group plc. The stripe symbol, the distinctive shield and the words BOC, ARGOSHIELD, STAINSHIELD, SPECSHIELD and PURESHIELD are the registered trademarks of the BOC Group plc.