Product description
TIG wire for welding “super austenitic” Cr-Ni-Mo-Cu alloys Very good resistance to pitting and stress corrosion cracking.
Excellent resistance to corrosion in reducing environments.
Product application instructions
|
ALLOY |
UNS |
DIN |
W -Nr. |
| 317 | S31703 | X2 CrNiMo 18 16 4 | 1.4438 |
| 31LN | S31753 | X3 CrNiMoN 17 13 5 | 1.4439 |
| – | – | G – X2 CrNiMoN 17 13 4 | 1.4446 |
| – | – | G – X7 NiCrMoCuNb 25 20 | 1.4500 |
| – | – | X5 NiCrMoCuNb 20 18 2 | 1.4505 |
| – | – | X5 NiCrMoCuTi 20 18 | 1.4506 |
| – | – | G – X2 NiCrMoCuN 20 18 | 1.4531 |
| – | – | G – X2 NiCrMoCuN 25 20 5 | 1.4536 |
| – | – | X1 NiCrMoCuN 25 20 5 | 1.4539 |
-
Tanks and piping for acids,
-
Heat exchangers,
-
Chemical reactors,
-
Marine or coastal installations,
-
Pharmaceutical production equipment.
Wear resistance
Corrosion
Classification
| AWS A5.22 | DIN 8556 | EN 12073 | Werkstoff Nr. |
|---|---|---|---|
| ER385 | SG - X2 CrNiMoCu 20 25 | T Z 20 25 Cu L R M 3 | 1.4519 |
Chemical analysis (%)
| C | Mn | If | Cr | Ni | Mo | Cu |
|---|---|---|---|---|---|---|
| 0.02 | 1.8 | 0.4 | 20.0 | 25.0 | 4.5 | 1.5 |
Mechanical characteristics
| Rm (MPa) | Rp0.2 (MPa) | A5 (%) | Av - ISO - V |
|---|---|---|---|
| 560 | 400 | 35 | 80 J: - 196°C |
Why choose ABRATIG 904L filler metal?
Choosing ABRATIG 904L filler metal (a high-alloy stainless steel alloy, also known as 1.4539 or Alloy 904L) is an excellent option when welding or repairing parts made of highly corrosion-resistant stainless steels, especially in very aggressive environments.
Here’s why we choose it:
- Excellent corrosion resistance
The 904L is designed to withstand :
- pitting and crevice corrosion,
- corrosion in acidic environments, including sulfuric acid, phosphoric acid and nitric acid,
- intergranular corrosion (thanks to its low carbon content),
- chloride corrosion (seawater, saline solutions).
- Excellent resistance to aggressive environments
It is one of the few economical stainless steels that combines molybdenum, nickel and copper in its composition,
making it resistant to environments where other stainless steels such as 316L fail.
- Good TIG weldability
904L welds well with the TIG process:
- without special precautions against hot cracking,
- without post-weld heat treatment in most cases,
- with good bead quality and excellent molten metal integrity.
- High purity = suitable for sensitive industries
TIG 904L filler metal is often used in :
- pharmaceutical, food and cosmetics industries,
- heavy chemicals and fertilizer plants,
- desalination or seawater treatment plants,
- refineries or offshore equipment.
