This PulseDrive program sets the machine up for pulsed arc welding with Union NiMoCr CL wire, 1.2 mm, with M21 shielding gas. It provides pulsed arc and double pulse, which means less spatter and better pool control.
What it is for
The program holds synergic curves for this one combination of wire, diameter and gas. You change wire feed speed or plate thickness and the machine sets voltage and arc shape itself. Wires of this group are used on high-strength steels, for example in construction machinery, cranes and trailers. The 1.2 mm diameter suits medium and thicker plate, typical in fabrication work. M21 is the most widely used mixture for structural steels.
| Part number | 79.P1.20998 |
|---|---|
| Brand | Böhler Welding |
| Program type | PulseDrive (pulsed arc and double pulse) |
| Wire | Union NiMoCr CL |
| Wire diameter | 1.2 mm |
| Shielding gas | M21 (Ar with 15 to 25% CO2) |
| Material | high-strength steels |
| Program line | Böhler ARC (tuned to a Böhler Welding wire) |
Fits
The Böhler Welding 2026/27 price list lists PulseDrive programs as an option for:
- TERRA NX: 320/400 PMC SteelDrive, 400 PMC DualFeeder, 320 PME, 400/500 PME
- URANOS NX: 2200 PMC, 2200 MTE, 2700 PMC, 2700 MTE, 3200 GSM, 4000/5000 GSM
Wire for this program
The program is tuned to Union NiMoCr CL wire. This wire has no separate product page in our shop; ask us about availability before ordering.
Other programs for this wire
- PulseDrive 1.0 mm, gas M21 (79.P1.20898)
- ArcDrive 1.2 mm, gas M21 (79.S1.20998)
- ArcDrive 1.0 mm, gas M21 (79.S1.20898)
- QuickPulse 1.2 mm, gas M21 (79.QP.20998)
FAQ
Will this program work on my machine?
Yes, if your model is on the list above. When ordering, give the model and serial number of the machine the program is for. Installation, by our service or as a manufacturer update, is agreed after the order.
How does PulseDrive differ from ArcDrive?
ArcDrive means short and spray arc without pulse. PulseDrive gives pulsed arc and double pulse: less spatter and easier pool control. ArcDrive for this set-up: ArcDrive 1.2 mm, gas M21 (79.S1.20998).
Can I use this program with a different wire?
The curves are tuned to Union NiMoCr CL. Another wire may behave differently, so contact us and we will match a program to the wire you use.
Spawlab is an authorised Böhler Welding distributor and service partner in Poland, VAT invoice included.

