Titanium and Titanium Alloy “G-coat series”

“G-coat series”

G-coat

Welding of titanium and titanium alloy parts usually employs TIG (Tungsten Inert Gas) welding although low throughput of TIG welding results in higher costs of such assemblies.  A more desirable option is higher efficiency MIG (Metal Inert Gas) welding. However, the addition of a small amount of oxygen into argon gas is necessary in order to stabilize the welding arc and the oxygen reacts with the titanium to form hard and brittle oxides that deteriorate the welded joint integrity.

Daido Steel has solved this problem with the development of a new class of welding wires, “G-coat”, which enables high efficiency MIG welding of titanium and titanium alloy parts using inert gas only (Ar or He), without the addition of oxygen.

“G-coat” titanium and titanium alloy welding wire, with its special coating , exhibits many positive qualities.  Some of these qualities are outlines below.

G-coat (PDF:264KB)

  1. The most suitable for GMAW
  2. Excellent arc stability in inert shielding gas (Pure Ar or He)
  3. Good wire feedability
  4. Smooth and uniform surface weld bead
  5. Low spatter
  6. Provides good mechanical properties in the Welded joints comparable with the base metal

G-coat series for MIG welding

DAIDO BRAND Applications Features ISO JIS AWS
WT1G Exhaust parts of automobile and motor cycles, plant, chemical containers, etc. Innovative titanium MIG welding through use of specially coated wire 24034 - S
Ti 0100
Z3331
YTW270*
A5.16
ER Ti-1*
WT2G Exhaust parts of automobile and motor cycles, plant, chemical containers, etc. Innovative titanium MIG welding through use of specially coated wire 24034 - S
Ti 0120
Z3331
YTW340*
A5.16
ER Ti-2*
WT3G Exhaust parts of automobile and motor cycles, plant, chemical containers, etc. Innovative titanium MIG welding through use of specially coated wire 24034 - S
Ti 0125
Z3331
YTW480*
A5.16
ER Ti-3*
WAT5G Butt and fillet welding of titanium alloy (6AI-4V) Innovative titanium alloy MIG welding through use of specially coated wire 24034 - S
Ti 6400
Z3331
YTAW6400*
A5.16
ER Ti-5*

*equivalent

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