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Penetration enhancing compounds
for gas tungsten arc welding
EWI's patented compounds for Gas Tungsten Arc Welding help increase weld penetration by as much as three times. These unique metallic oxide compounds are available in a powder form. The powder is combined with a liquid carrier to form a slurry that is then applied to the top face of the joint to be welded.
The metallic oxides change the weld metal flow such that penetration is increased while the quality of the weld is improved. These compounds have been developed through extensive research carried out by EWI and the Navy Joining Center (NJC). Repeated testing has proven that the mechanical properties, weldability and corrosion resistance are not affected in most of the cases. (Compounds are sometimes referred to as TIG Flux, Activating Compounds, PEC and other names.)
Benefits
The benefits of PEC or TIG Flux include:
- Increases weld penetration by as much as 3 times
- Improves consistency of welds
- Improves quality of welds and reduces reject rates
- Reduces distortion
The figure above left illustrates a gas tungsten arc weld. Above right depicts gas tungsten arc weld with penetration enhancing compound.
Compounds
Different compounds are needed for welding different base materials. Currently, EWI supplies:
- SS-7 for Stainless Steels
- NI-139 for Nickel Based Alloys
- CS-325 for Carbon and Low-Alloy Steels
More Information
For more information, please view:
Penetration Enhancing Compounds for GTAW Information Sheet
GTAW PEC Technology Brief
To Order
The Penetration Enhancing Compound for GTAW (TIG-FLUX) is available in kit form. Please contact:
Shuchi Khurana
EWI
1250 Arthur E. Adams Dr.
Columbus, OH 43221
phone: 614.688.5250
shuchi_khurana@ewi.org
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Laboratory Testing
