Shielding Gas Selection; Welding Wire Selection - Linde BOC RAPTOR Operating Manual

9.4 Shielding gas selection

Shielding
Material gas
Brass Argon
Cobalt-based Argon
alloys
Copper-nickel Argon
(Monel)
Deoxised Helium
copper
Helium(75%)
/Argon(25%)
Nickel alloys Argon
(Inconel)
Helium
Steel Argon
Helium
Magnesium Argon
alloys
Stainless steel Argon
Helium
Titanium Argon
Helium
26
Benefits
Stable arc
Low fume
Stable and easy to
control arc
Stable and easy to
control arc
Can be used for
copper-nickel to
steel
Increased heat
input
Stable arc
Good penetration
Stable arc
Lower penetration
Stable arc
Manual operation
High speed
automated welding
Stable arc
Good penetration
High speed
automatic welding
Deeper penetration
Small concentrated
HAZ
Used with
continuous high
frequency AC
Good arc stability
Good cleaning
action
Good penetration
Good arc stability
Deeper penetration
Stable arc
High speed
welding

9.5 Welding wire selection

The following table includes the recommended
welding consumable for the most commonly
welded materials.
Base material
C-Mn and low carbon steels BOC Mild steel TIG
Low Alloy steels
1.25Cr/0.5Mo
2.5Cr/1Mo
Stainless Steel
304/304L
316/316L
309/309-C-Mn
321/Stabilised grades
Filler rod
diameter (mm)
2
3
4
4 or 5
5 or 6
BOC Consumable
wire
Comweld CrMo1
Comweld CrMo2
Profill 308
Profill 316
Profill 309
Profill 347
Thickness
of metal (mm)
0.5 – 2
2 – 5
5 – 8
8 – 12
12 or more