Titanium can be tungsten arc welded using similar techniques to those used for welding stainless steels. Protection needs to be provided to titanium weldments on cooling down to about 800°F (427°C) as well as to the molten weld puddle in order to prevent contamination by air.
AWS A5.16 ERTi-2 (Titanium Grade 2)
Commercially pure titanium used for welding pure titanium and titanium alloys with similar chemical composition.
| AWS A5.16 ERTi-2 Typical Chemical Composition [%] | |||||
|---|---|---|---|---|---|
| C | O | N | H | Fe | Ti |
| 0.03 max | 0.08-0.016 | 0.015 max | 0.008 max | 0.12 max | Rem |
AWS A5.16 ERTi-5 (Titanium Grade 5 / Ti6Al4V)
Heat treatable titanium alloy with higher strength and good corrosion resistance used for aircraft components.
| AWS A5.16 ERTi-5 Typical Chemical Composition [%] | |||||||
|---|---|---|---|---|---|---|---|
| C | O | N | H | Fe | Al | V | Ti |
| 0.05 max | 0.12-0.20 | 0.03 max | 0.015 max | 0.22 max | 5.5-6.75 | 3.5-4.5 | Rem |
AWS A5.16 ERTi-7 (Titanium Grade 7)
Titanium alloy with the same mechanical properties as Grade 2. 0.12 % wt. addition of palladium improves corrosion resistance.
| AWS A5.16 ERTi-7 Typical Chemical Composition [%] | ||||||
|---|---|---|---|---|---|---|
| C | O | N | H | Fe | Pd | Ti |
| 0.03 max | 0.08-0.16 | 0.015 max | 0.008 max | 0.12 max | 0.12-0.25 | Rem |
TIG/MIG wire sizes availiable:
| 0.030" | 0.035" | 0.045" | 1/16" | 3/32" | 1/8" |
|---|---|---|---|---|---|
| 0,8 mm | 0,9 mm | 1,2 mm | 1,6 mm | 2,4 mm | 3,2 mm |