Hardfacing
FERVEO HRF 65
covered electrode · stick electrodeCatalogue only
AWS class
E 10-UM-65 GRZ
EN ISO class
E Fe 16
Hardness
56–59 HRC
Classification
| AWS class | E 10-UM-65 GRZ |
|---|---|
| EN ISO class | E Fe 16 |
| DIN 8555 / EN 14700 | E6-UM-60 |
Purpose
- Cr-Mo-V-W-Nb super-hardfacing electrode (EN ISO E Fe16, DIN 8555 E 10-UM-65 GRZ), 63–67 HRC — the hardest in the FERVEO HRF family, for extreme sliding mineral abrasion.
Why it works
Combines chromium with molybdenum, vanadium, tungsten, and niobium — a dense mix of complex carbides gives the highest hardness and abrasion resistance in the whole FERVEO HRF electrode family, for the most extreme sliding-abrasion service.
Fields of application
- Blast furnace cover mechanisms, breakers, mixers, augers — and generally coal mining and the cement and non-metallic minerals industry, under extreme sliding abrasion.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.55 |
| Cr | 6.8 |
| Mn | 1.35 |
| Mo | 1.2 |
| Nb | 0.6 |
| Si | 0.75 |
Mechanical properties
| Hardness | 56–59 HRC |
|---|
Process
| Polarity | DC+ |
|---|---|
| Re-drying | 300°C / 2h |
Sizes and part numbers
| Ø | Length | Current | Request |
|---|---|---|---|
| 3.2 mm | 350 mm | 100–140 A | |
| 4 mm | 450 mm | 140–180 A | |
| 5 mm | 450 mm | 180–230 A |
Cross-reference
| Replaces EH 528 (Magmaweld) | Direct replacement |
| Replaces EH 540 (Magmaweld) | Direct replacement |
| Replaces Stoody XHC (Stoody) | Direct replacement |
| Replaces UTP LEDURIT 65 (UTP) | Direct replacement |
Equivalence refers to the classification (AWS / EN ISO), not to product identity. In applications with a qualified procedure (WPS), validate the substitution before use.
Advantages
- The highest hardness and abrasion resistance in the whole FERVEO HRF electrode family.
- High deposition efficiency (≈230%).
Limitations
- Unlike FERVEO HRF 600/650, do not apply more than two filling passes with this electrode, and do not hammer or water-cool the hot bead — those techniques are for HRF 600/650, not for this harder family.
- The most complex, hardest carbide deposit in the family is also the most crack-sensitive — needs a tough filling layer beneath it and is not suited to impact-loaded parts.