Nickel alloys
FERVEO NIC 686 MIG
solid wireCatalogue only
also as: TIG rod
AWS class
ER NiCrMo-14
EN ISO class
EN ISO 18274: S Ni 6686 (NiCr 21Mo16W4)
Tensile strength (Rm)
760 MPa
Classification
| AWS class | ER NiCrMo-14 |
|---|---|
| EN ISO class | EN ISO 18274: S Ni 6686 (NiCr 21Mo16W4) |
| Material no. (W.-Nr.) | 2.4606 |
Purpose
- Ni-Cr-Mo-W solid wire (alloy 686) with very high corrosion resistance, for demanding reducing and oxidizing environments.
- Joining and surfacing with matching or similar alloys.
Why it works
Molybdenum (16%) combined with tungsten (3.8%) on a Ni-Cr base raises corrosion resistance beyond NIC 22 and NIC 59 — this Mo+W combination is what makes the 686 family one of the most corrosion-resistant nickel alloys available against simultaneously reducing and oxidizing media, such as those found in flue-gas desulfurization plants.
Fields of application
- Chemical process equipment in simultaneously reducing and oxidizing environments.
- Joining and surfacing with matching or similar alloys (2.4602, 2.4605, 2.4606).
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.01 |
| W | 3.8 |
| Al | 0.3 |
| Cr | 23 |
| Fe | ≤ 1 |
| Mn | ≤ 0.5 |
| Mo | 16 |
| Ni | balance |
| Si | 0.1 |
Mechanical properties
| Tensile strength (Rm) | 760 MPa |
|---|---|
| Yield strength (Rp0.2) | 450 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 50 J |
Process
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.8 mm | |
| 1 mm | |
| 1.2 mm | |
| 1.6 mm |
Supply programme
spools D100 / D200 / K200 / K300
Base metals
2.46022.46052.46062.4819
Advantages
- Corrosion resistance superior to NIC 22 and NIC 59 thanks to the combined Mo+W.
- Suitable for both reducing and oxidizing environments in the same service.
Limitations
- Supplier datasheet has no documented MIG/MAG gas data for this variant — confirm parameters with the manufacturer.
- High-cost alloy — reserve for service that genuinely needs this extreme chemical resistance.