Stainless steels
FERVEO INX 385 R
covered electrode · stick electrodeCatalogue only
AWS class
E 385 -16
EN ISO class
E 20 25 5 Cu N L R 32
Tensile strength (Rm)
550–700 MPa
Classification
| AWS class | E 385 -16 |
|---|---|
| EN ISO class | E 20 25 5 Cu N L R 32 |
Purpose
- Super-austenitic Cr-Ni-Mo-Cu 20/25/4.5/1.5 rutile electrode (E 385-16) — for highly corrosive environments, especially reducing ones.
Why it works
More nickel, molybdenum and copper than the whole 316/317/318 family — copper adds specific resistance in reducing environments (acids), and together they give far higher intergranular and wet corrosion resistance, to 350°C.
Fields of application
- Joining and surfacing of equivalent Cr-Ni-Mo-Cu austenitic steel and its castings.
- Joining these steels to unalloyed or low-alloy steel.
Chemical composition
| Element | Typical, % |
|---|---|
| C | ≤ 0.03 |
| Cr | 20 |
| Cu | 1.5 |
| Mn | 1 |
| Mo | 4.5 |
| Ni | 25 |
| Si | 0.75 |
Mechanical properties
| Tensile strength (Rm) | 550–700 MPa |
|---|---|
| Yield strength (Rp0.2) | 400 MPa |
| Elongation (A5) | 30 % |
| Impact energy (KV) | 47 J (20 °C) |
Process
| Polarity | DC+/AC |
|---|---|
| Positions | PAflatPBhorizontal-verticalPChorizontalPDhorizontal-overheadPEoverheadPFvertical-up |
| Re-drying | 120°C - 200°C / min. 2h |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 2.5 mm | 250 mm | 50–90 A | |
| 3.2 mm | 350 mm | 80–120 A | |
| 4 mm | 350 mm | 110–160 A |
Advantages
- Intergranular and wet corrosion resistance to 350°C.
- High corrosion resistance in reducing environments.
- Weldable on DC+ or AC.