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Equipment functions & components
- AC/DC TIG welding -A alternating current (AC) and direct current (DC). Welding of almost all metals, such as steel, stainless steel, aluminum, copper and many more.
- 2 in 1 combination unit - TIG & MMA welding is possible up to 200A.
- IGBT Technology - Latest and most advanced transistor technology enables high performance welding! No transformer, no MOSFET, state of the art IGBT!
- Lightweight & compact design - only 11.5 kg weight and dimensions of 455 x 220 x 370 mm. Inovative IGBT transistors save space and weight compared to old MOSFET technology. No more heavy carrying!
- HF ignition - enables non-contact ignition and provides much better welding results. No LIFT ARC, no strike ignition!
- Highest Efficiency & Power - Single phase AC power (230V) powers the unit and allows output power of true 200 amps.
- Smart Cooling & Overheat Protection - State-of-the-art technology, built-in overheat protection, and high performance cooling allow for maximum power retrieval.
Device features & benefits
- 2T/4T (TIG) - determines the control of the operating mode and offers extended control over the current flow. In 2T mode, high-frequency (HF) ignition remains active until the button on the torch is released. In 4T mode, the arc is ignited after pressing and releasing the button once. After pressing and releasing the button again, ignition is terminated. Some functions, such as current reduction, are only possible in 4T mode.
- Current reduction - prevents the formation of blowholes (end craters) at the end of the weld seam.
- Gas pre- and post-run (TIG) - protects the tungsten electrode from excessive wear and protects the weld seam from oxidation. The parameters can be set individually and separately. They specify how long gas should flow before and after ignition.

Technical Data
| Model | AC/DC WIG 200 ST |
| Processes | AC/DC TIG (TIG), MMA/E-Hand (DC) |
| TIG output current | 10-200 A |
| Output current MMA | 30-160 A |
| Duty cycle TIG (40°C) | 15% at 200A / 60% at 150A / 100% at 100A |
| MMA duty cycle (40°C) | 10% at 160A / 60% at 100A / 100% at 60A |
| Open circuit voltage U | 68 V (DC) / 48 V (AC) |
| Protection class | IP21S |
| Mains voltage | 1 × 230 V AC (±15%) |
| Mains frequency | 50 / 60 Hz |
| Maximum mains current (I1max) | WIG: 33.5 A / MMA: 33.8 A |
| Maximum effective mains current (I1eff) | WIG: 13.0 A / MMA: 10.7 A |
| Dimensions (L × W × H) | 449 × 238 × 437 mm |
| weight | 12.7 kg |
| Mains connection | CEE 7/7 Schuko plug |
| Standards | IEC 60974-1; EN 60974-10 (Class A) |
| Certified by: | SGS Standards Technical Services Co, Ltd. |
| WEEE reg. no. DE | 85577200 |
Scope of delivery
- 1 x STAHLWERK AC/DC TIG 200 ST IGBT welding machine
- 1 x Professional TIG welding torch WP-26F / hose package 3 meters* with flexible torch head and kink protection on the gas connection
- 1 x TIG TIG accessory set 8-piece:
- 3 x gas nozzles sizes: 5, 6, 7
- 1 x clamping sleeve size 1.6
- 1 x clamping sleeve housing size 1.6
- 2 x torch cap - one short and one long
- 1 x universal tungsten electrode 1.6 mm
* Pre-assembled accessories from the welding torch illustration are included in the 8-piece set - 1 x earth cable 3 meters
- 1 x electrode holder 3 meters
- 1 x wire brush
- 1 x slag hammer
- 1 x Gas connection hose with quick coupling 5 meters
- 1 x Snap-on connection set
- 1 x protective cover
High-quality professional WP-26F TIG hose package with flexible torch head and bend protection at the gas connection. An 8-piece consumable set for immediate start is included.
Robust electrode holder with modern 9 mm mandrel connection and 25 mm² strong cable cross-section. Best conductivity due to high-quality copper cables. Different angles for rod electrodes possible.
Robust earth clamp with modern 9 mm mandrel connection and 25 mm² strong cable cross-section. Best conductivity due to high-quality copper cables.
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STAHLWERK Schweissgeräte Deutschland GmbH was founded in 1998 and offers original welding equipment as a manufacturer. We are your professional and reliable welding equipment supplier. Product safety carries the registered trademark STAHLWERK. The company responsible for product safety is STAHLWERK Schweissgeräte GmbH
located in Bornheim
Mainstraße 4
53332
Germany. For questions regarding product safety
please contact us at the electronic address info@stahlwerk-schweissgeraete.de or by phone at +49 228 24331713. The person responsible for product safety is Alexander Hamann.