What it welds
The AHP Alpha-TIG225Xi AC/DC TIG Welder is an AC/DC TIG with a maker-stated output of up to 225 amps on 120-volt input.
At its top output of 225 amps, Miller's 1-amp-per-thousandth rule points to about 0.225 in of steel per pass. Where the rule comes from.
The listing doesn't give a duty cycle with its amperage, which makes long beads hard to plan; the rating plate or manual should state it. Why it matters.
Processes, per the maker: TIG/Stick. Most multi-process machines' TIG is DC lift-arc, so no aluminium unless AC is stated. Choosing a process.
It's AC/DC, so it can weld aluminium as well as steel and stainless. Pulse: Pulse.
Household 120-volt power caps its output; check the circuit size the manual asks for. What input voltage changes.
Use a lens of at least OSHA's minimum shade for the current: shade 8 or darker for typical TIG or stick work here. Shade chart.
Is it the right machine for the job?
Buy it for
- Aluminium and thin metal
- Steel to about 0.225 in per pass
Skip it for
- Steel much past 0.225 in in one pass
What it does well, where it falls short
Does well
- Up to 225 A output
- Runs on household 120 V
- AC/DC for aluminium
- Pulse: Pulse
Falls short
- Duty cycle not stated with amps
- 120 V caps output
Power and setup notes
- Ratings are the maker's own, stated under the maker's conditions. Follow the manual, wear eye protection of at least OSHA's minimum shade, keep combustibles away, ventilate, and have a licensed electrician install new circuits.
Rated output and specs
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | Alpha-TIG225Xi | Retailer |
|---|---|---|
| Output range | 225 amp | Retailer |
| Input power | 120v | Retailer |
| Processes | TIG/Stick | Retailer |
| AC / DC | ac/dc | Retailer |
| Pulse | Pulse | Retailer |
Machines to put next to it
Other tig welders in the same amp range
Final verdict
Made for aluminium and thin metal.
Where to buy
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