What is K-TIG

The Overview

K-TIG (Keyhole TIG) is a high energy density variant of GTAW. It is a high speed, single pass, full penetration welding technology that welds up to 100 times faster than TIG welding in materials up to 5/8in (16mm) in thickness.

K-TIG works across a wide range of applications, and is particularly well suited to corrosion resistant materials such as stainless steels, duplex, super duplex, nickel alloys, titanium alloys, super alloys and exotic materials.

It easily handles longitudinal and circumferential welds on pipe, plate, spooling, vessel, tank and other applications.

On circumferential joints, it has no difficulty in closing out the keyhole after the overlap and sloping out to leave a high quality tie-in. Plus, the system welds effortlessly in 1G and 2G welding positions, and is perfect for:

  • Titanium up to 5/8 inch (16mm) thickness
  • Stainless steel up to 1/2 inch (13mm) thickness
  • Nickel alloys & super alloys up to 1/2 inch (13mm) thickness
  • High quality carbon steel up to 1/4 inch (6mm) thickness

K-TIG’s incredibly fast welding times result in dramatic reductions in labor costs, welding cycle times, rework and repair costs, gas and power consumption. K-TIG's full-penetration welds significantly reduce or eliminate grinding, back-gouging & reworking. The K-TIG process eliminates the need for edge bevelling and dramatically reduces or eliminates the need for filler material. K-TIG requires only a simple square butt joint, and can also be utilised with all standard GTAW preparations. 

 Learn about K-TIG in action with the TITAN Case Study

Where it began

Keyhole TIG is a patented, highly productive GTAW variant which was originally developed by the Australian Government’s Commonwealth Scientific & Industrial Research Organisation (CSIRO), in conjunction with the Cooperative Research Centre for Welded Structures. 

K-TIG welding is a new productivity benchmark. It sets an entirely new bar for what can be achieved with an arc welding system. The speed, penetration, quality and overall savings generated by the process are extraordinary. 
Attila Szabo, Principal Joining Engineer, GE

The System

The K-TIG System has been specifically engineered to deliver the Keyhole GTAW process in a robust, intelligent and extremely simple to operate system. K-TIG welding systems are produced in Adelaide, South Australia.

The complete K-TIG system is comprised of the following components:

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