AC/DC TIG 200 ST Digital Welding Machine | Complete Kit

200 A AC/DC TIG welding machine for workshops, job sites and industrial fabrication

The STAHLWERK AC/DC TIG 200 ST Digital is a 3-in-1 combined welding machine designed for professionals looking for power, precision and versatility in a compact unit. With its AC/DC TIG, MMA/E-Hand processes and integrated Clean mode, it allows you to weld, repair, assemble and clean stainless steel weld seams with a single machine.

Its IGBT inverter technology delivers a stable arc, high energy efficiency and controlled power up to 200 A in TIG. With a weight of only 12.7 kg, it also features a robust ST-Guard housing.

Precise digital control for clean and repeatable welds

The digital control panel with colour LED display gives access to the main settings in just a few steps: process selection, AC/DC switching, gas adjustment, start current, welding current, final current, current upslope and downslope. The logical navigation with a central rotary knob ensures quick handling for both one-off jobs and series production.

The integrated job memory allows up to 10 parameter sets to be saved. Each configuration can be recalled instantly, helping to secure consistent results when changing materials, thicknesses or weld bead types.

Ideal for aluminium thanks to AC TIG and advanced settings

In AC TIG mode, the machine is designed for welding aluminium and aluminium alloys. The AC frequency, AC balance and cleaning current can be adjusted individually to control penetration, weld bead width and targeted removal of the oxide layer.

Four AC waveforms are available: square, triangular, trapezoidal and sine. The user can adapt the arc behaviour, weld pool shape and sound comfort according to the workpiece, application and expected finish level.

Integrated Clean mode for finishing stainless steel weld seams

Clean mode turns the machine into an electrochemical cleaning solution for stainless steel weld seams. With a carbon fibre brush and a suitable electrolyte, it helps remove heat tint and oxide layers to achieve a smooth, clean and visually professional surface.

This function is particularly suitable for visible stainless steel fabrications: railings, equipment, metal structures, decorative parts or technical installations. Passivation helps improve corrosion resistance and immediately enhances the quality of the finished work.

Integrated professional functions

• DC TIG welding: direct current from 10 to 200 A for steel, stainless steel, copper, brass and many other metals.
• AC TIG welding: alternating current for aluminium and aluminium alloys, with precise adjustment of AC frequency, AC balance and cleaning current.
• MMA/E-Hand welding: 30 to 160 A range for standard coated electrodes, with Hotstart and Anti-Stick.
• Clean mode: electrochemical cleaning, passivation and finishing of stainless steel weld seams.
• Contactless HF ignition: clean arc start, protecting the tungsten electrode and the workpiece.
• 2T/4T function: comfortable control for short and long welds.
• Spot function: repeatable spot welds on thin sheets, with low heat input and reduced distortion.
• Repeat function: repetitive welding cycles for regular weld seams and series work.
• Memory 0-9: up to 10 complete settings saved in the machine.
• Intelligent cooling: powerful fan, overheating protection and reliable operation.
• ST-Guard housing: robust, ergonomic design suitable for demanding working environments.

Technical data

Included:

• 1 x STAHLWERK AC/DC TIG 200 ST Digital welding machine
• 1 x Professional TIG welding torch WP-26FR / 3-metre hose package* with control wheel for remote adjustment of the welding current on the handle and flexible torch head
• 1 x 8-piece TIG accessory set: 3 x gas nozzles sizes 5, 6, 7 / 1 x collet size 1.6 mm / 1 x collet body size 1.6 mm / 2 x torch caps, one short and one long / 1 x universal tungsten electrode 1.6 mm

*The pre-assembled accessories shown on the welding torch illustration are part of the 8-piece set.

• 1 x 3-metre earth cable
• 1 x 3-metre electrode holder
• 1 x wire brush
• 1 x slag hammer
• 1 x 5-metre gas connection hose with quick connector
• 1 x quick connector for gas regulator (female)
• 1 x protective cover
• 1 x TIG ER70S G3 steel welding rod
• 1 x ER307Si TIG highly alloyed stainless steel welding rod
• 1 x TIG ER4043Si5 highly alloyed aluminium welding rod
• 2 x tungsten electrodes 1.6
• 1 x gas regulator
• 1 x professional welding helmet
• 1 x 3-piece carbon fibre brush kit with screw adapter

Warning: do not use in residential areas supplied by the domestic mains network. Risk of electromagnetic interference.