Nickel alloys
FERVEO NIC 825 TIG
TIG rodCatalogue only
also as: solid wire
AWS class
ERNiFeCr-1
EN ISO class
EN ISO 18274: S Ni 8065 – NiFe30Cr21Mo3
Tensile strength (Rm)
550 MPa
Classification
| AWS class | ERNiFeCr-1 |
|---|---|
| EN ISO class | EN ISO 18274: S Ni 8065 – NiFe30Cr21Mo3 |
| Material no. (W.-Nr.) | 2.4858 |
Purpose
- Fe-Ni-Cr-Mo-Cu solid TIG rod (alloy 825) for joining and surfacing alloy 825 and CrNiMoCu austenitic steels.
- Good corrosion resistance in sulfuric and phosphoric acid media.
Why it works
Copper (2.5%) added to an Fe-Ni-Cr-Mo base is what sets this alloy apart — like the copper in CUP 28 (the INX superaustenitic line), it specifically improves behavior against sulfuric acid, while molybdenum (3.1%) provides pitting resistance in chlorides.
Fields of application
- Joining and surfacing alloy 825 (2.4858, UNS N08825).
- CrNiMoCu austenitic steels in process equipment handling sulfuric or phosphoric acid.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.01 |
| Cr | 22.5 |
| Cu | 2.5 |
| Fe | balance |
| Mn | 0.8 |
| Mo | 3.1 |
| Ni | 44 |
| Si | 0.3 |
| Ti | 0.9 |
Mechanical properties
| Tensile strength (Rm) | 550 MPa |
|---|---|
| Yield strength (Rp0.2) | 360 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 100 J |
Process
| Polarity | DC− |
|---|---|
| Shielding gas | I1 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 1 mm | |
| 1.6 mm | |
| 2.4 mm | |
| 3.2 mm |
Supply programme
boxes 5 / 10 kg
Base metals
2.4858 (Alloy 825, UNS N08825)UNS N08904
Advantages
- Copper (2.5%) specifically improves resistance to sulfuric and phosphoric acid.
- Good strength-ductility balance (Rm 550 MPa, A5 30%).
Limitations
- Supplier datasheet gives no shielding-gas data (MIG or TIG) — confirm parameters with the manufacturer before welding.
- Iron-base alloy (not nickel-base) — lower high-temperature resistance than this datasheet's NiCr/NiCrMo alloys.