BOC Industrial Gases

Selector Guide

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In order to produce welds of the highest quality economically, it is vital that you choose the right shielding gas for the job.

The shielding gases selector table is a quick and easy reference table to help you make the right choice. Please select your welding material from menu below:

Carbon & Alloy Steel

Key:  • Recommended   • Also suitable

MIG
TIG
Cored Wire
PAW
PAC
 Purging
Argoshield Light •          
Argoshield Universal •   •      
Argoshield Heavy •   •      
Alushield Light   •   •   •
Alushield Universal   •   •   •
Alushield Heavy   •   •   •
Stainshield Light            
Stainshield Universal            
Stainshield Heavy            
Stainshield TIG            
Pureshield Argon   •   •   •
Carbon dioxide •   •   •  
Nitrogen         • •
Specshield 5% H2, Ar            
Specshield 11% He, 4% H2, Ar            
Specshield 35% H2, Ar            
Specshield 2.5% CO2, Ar            
Specshield 10% CO2, Ar •   •      
Specshield 20% CO2, Ar •   •      
Specshield 2% O2, Ar            
Specshield 2.5% N2, Ar            

Austenitic Stainless Steels

Key:  • Recommended   • Also suitable

MIG
TIG
Cored
PAW
Wire
PAC
 Purging
Argoshield Light •          
Argoshield Universal     •      
Argoshield Heavy     •      
Alushield Light   •   •   •
Alushield Universal   •   •   •
Alushield Heavy   •   •   •
Stainshield Light •          
Stainshield Universal •          
Stainshield Heavy •          
Stainshield TIG   •   •   •
Pureshield Argon   •   •   •
Carbon dioxide     •   •  
Nitrogen         • •
Specshield 5% H2, Ar   •   •   •
Specshield 11% He, 4% H2, Ar   •   •    
Specshield 35% H2, Ar         •  
Specshield 2.5% CO2, Ar •          
Specshield 10% CO2, Ar     •      
Specshield 20% CO2, Ar     •      
Specshield 2% O2, Ar •          
Specshield 2.5% N2, Ar            

Ferritic & Martensitic Stainless Steels

Key:  • Recommended   • Also suitable

MIG
TIG
Cored
PAW
Wire
PAC
 Purging
Argoshield Light            
Argoshield Universal     •      
Argoshield Heavy     •      
Alushield Light   •   •   •
Alushield Universal   •   •   •
Alushield Heavy   •   •   •
Stainshield Light •          
Stainshield Universal •          
Stainshield Heavy •          
Stainshield TIG            
Pureshield Argon   •   •   •
Carbon dioxide     •   •  
Nitrogen         • •
Specshield 5% H2, Ar            
Specshield 11% He, 4% H2, Ar            
Specshield 35% H2, Ar         •  
Specshield 2.5% CO2, Ar •          
Specshield 10% CO2, Ar     •      
Specshield 20% CO2, Ar     •      
Specshield 2% O2, Ar •          
Specshield 2.5% N2, Ar            

Duplex Stainless Steels

Key:  • Recommended   • Also suitable

MIG
TIG
Cored
PAW
Wire
PAC
 Purging
Argoshield Light            
Argoshield Universal     •      
Argoshield Heavy     •      
Alushield Light   •   •   •
Alushield Universal   •   •   •
Alushield Heavy   •   •   •
Stainshield Light •          
Stainshield Universal •          
Stainshield Heavy •          
Stainshield TIG            
Pureshield Argon   •   •   •
Carbon dioxide     •   •  
Nitrogen         • •
Specshield 5% H2, Ar            
Specshield 11% He, 4% H2, Ar            
Specshield 35% H2, Ar         •  
Specshield 2.5% CO2, Ar •          
Specshield 10% CO2, Ar     •      
Specshield 20% CO2, Ar     •      
Specshield 2% O2, Ar •          
Specshield 2.5% N2, Ar   •       •

Aluminium

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal          
Argoshield Heavy          
Alushield Light • • •   •
Alushield Universal • • •   •
Alushield Heavy • • •   •
Stainshield Light          
Stainshield Universal          
Stainshield Heavy          
Stainshield TIG          
Pureshield Argon • • •   •
Carbon dioxide       •  
Nitrogen       •  
Specshield 5% H2, Ar          
Specshield 11% He, 4% H2, Ar          
Specshield 35% H2, Ar       •  
Specshield 2.5% CO2, Ar          
Specshield 10% CO2, Ar          
Specshield 20% CO2, Ar          
Specshield 2% O2, Ar          
Specshield 2.5% N2, Ar          

Copper

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal          
Argoshield Heavy          
Alushield Light • • •   •
Alushield Universal • • •   •
Alushield Heavy • • •   •
Stainshield Light          
Stainshield Universal          
Stainshield Heavy          
Stainshield TIG          
Pureshield Argon • • •   •
Carbon dioxide       •  
Nitrogen       •  
Specshield 5% H2, Ar          
Specshield 11% He, 4% H2, Ar          
Specshield 35% H2, Ar       •  
Specshield 2.5% CO2, Ar          
Specshield 10% CO2, Ar          
Specshield 20% CO2, Ar          
Specshield 2% O2, Ar          
Specshield 2.5% N2, Ar          

Cast Iron

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal        
Argoshield Heavy        
Alushield Light • •   •
Alushield Universal • •   •
Alushield Heavy • •   •
Stainshield Light        
Stainshield Universal        
Stainshield Heavy        
Stainshield TIG        
Pureshield Argon • •   •
Carbon dioxide     •  
Nitrogen     • •
Specshield 5% H2, Ar        
Specshield 11% He, 4% H2, Ar        
Specshield 35% H2, Ar     •  
Specshield 2.5% CO2, Ar        
Specshield 10% CO2, Ar        
Specshield 20% CO2, Ar        
Specshield 2% O2, Ar        
Specshield 2.5% N2, Ar        

Nickel Alloys (not monels)

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal          
Argoshield Heavy          
Alushield Light   • •   •
Alushield Universal   • •   •
Alushield Heavy   • •   •
Stainshield Light •        
Stainshield Universal •        
Stainshield Heavy •        
Stainshield TIG   • •   •
Pureshield Argon   • •   •
Carbon dioxide       •  
Nitrogen       • •
Specshield 5% H2, Ar   • •   •
Specshield 11% He, 4% H2, Ar   •      
Specshield 35% H2, Ar       •  
Specshield 2.5% CO2, Ar •        
Specshield 10% CO2, Ar          
Specshield 20% CO2, Ar          
Specshield 2% O2, Ar •        
Specshield 2.5% N2, Ar          

Nickel Copper - Monels

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal          
Argoshield Heavy          
Alushield Light • • •   •
Alushield Universal • • •   •
Alushield Heavy • • •   •
Stainshield Light          
Stainshield Universal          
Stainshield Heavy          
Stainshield TIG          
Pureshield Argon • • •   •
Carbon dioxide          
Nitrogen       •  
Specshield 5% H2, Ar          
Specshield 11% He, 4% H2, Ar          
Specshield 35% H2, Ar          
Specshield 2.5% CO2, Ar          
Specshield 10% CO2, Ar          
Specshield 20% CO2, Ar          
Specshield 2% O2, Ar          
Specshield 2.5% N2, Ar          

Titanium & Magnesium

Key:  • Recommended   • Also suitable

MIG
TIG
PAW
PAC
 Purging
Argoshield Light          
Argoshield Universal          
Argoshield Heavy          
Alushield Light • • •   •
Alushield Universal • • •   •
Alushield Heavy • • •   •
Stainshield Light          
Stainshield Universal          
Stainshield Heavy          
Stainshield TIG          
Pureshield Argon • • •   •
Carbon dioxide          
Nitrogen       •  
Specshield 5% H2, Ar          
Specshield 11% He, 4% H2, Ar          
Specshield 35% H2, Ar          
Specshield 2.5% CO2, Ar          
Specshield 10% CO2, Ar          
Specshield 20% CO2, Ar          
Specshield 2% O2, Ar          
Specshield 2.5% N2, Ar          

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