Hardfacing
FERVEO HRF 55Mo FCW
flux-cored wire (FCW)Catalogue only
AWS class
EN 14700 T Z Fe 14
EN ISO class
EN 14700: T Z Fe 14
Hardness
57–60 HRC
Classification
| AWS class | EN 14700 T Z Fe 14 |
|---|---|
| EN ISO class | EN 14700: T Z Fe 14 |
Purpose
- Self-shielded, highly alloyed C-Cr-Mo wire (27% Cr), for hardfacing parts under severe abrasive mineral wear, heat-resistant to 450°C.
Why it works
Heavy chromium carbides give resistance to mineral abrasion; molybdenum raises hot-hardness retention to 450°C compared with Mo-free variants. Overlay thickness should not exceed 8 mm (2–3 passes, best at 2), and impact loading on the deposit should be kept as low as possible. The finest practical diameter with well-matched energy input gives a crack-free deposit.
Fields of application
- Coal crusher cones and liners, crusher rolls.
- Pumps, mixer parts, conveyor screws.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 5 |
| Cr | 27 |
| Mo | 1.3 |
| Ni | 0.6 |
| Si | 1.7 |
Mechanical properties
| Hardness | 57–60 HRC |
|---|
Process
| Requires shielding gas | Self-shielded (gasless) |
|---|
Sizes and part numbers
| Ø | Current | Voltage | Request |
|---|---|---|---|
| 1.6 mm | 160–260 A | 20–26 V | |
| 2 mm | 220–280 A | 22–26 V | |
| 2.4 mm | 260–340 A | 26–30 V | |
| 2.8 mm | 320–400 A | 28–30 V |
Supply programme
spools K300
Advantages
- Resists severe abrasive mineral wear.
- Hot-hardness retention to 450°C (from Mo).
- Rust-resistant deposit.
- No shielding gas needed.
Limitations
- Maximum overlay thickness 8 mm (2–3 passes, best at 2).
- Needs matched diameter/energy input to avoid cracking.