AWS A5.12 Tungsten & Tungsten-Alloy Electrodes for Arc Welding & Cutting
This standard specifies requirements for classification of nonconsumable tungsten electrodes for inert gas shielded arc welding, and for plasma welding, cutting, and thermal spraying.
| GRADE |
|---|
| EWP (PURE TUNGSTEN) |
| EWCe-2 |
| EWLa-1 |
| EWLa-1.5 |
| EWLa-2 |
| EWTh-1 |
| EWTh-2 |
| EWZr-1 |
| EWG (GROUND TUNGSTEN) |