Hardfacing
FERVEO HRF 350
covered electrode · stick electrodeCatalogue only
also as: solid wireTIG rod
AWS class
E 1-UM-350
EN ISO class
E Fe 1
Hardness
330–380 HB
Classification
| AWS class | E 1-UM-350 |
|---|---|
| EN ISO class | E Fe 1 |
| DIN 8555 / EN 14700 | E1-UM-350 |
Purpose
- Basic-coated, medium-high hardness (330-380 HB) surfacing electrode for rail crossings, tensioner rollers, tracks, guides and drive sprockets.
- The deposit is machinable after welding.
Why it works
Basic coating, one notch harder than HRF 300 — built for rolling and drive parts (tracks, rollers, sprockets) where abrasive wear is constant but the part still needs to be machined to size after welding.
Fields of application
- Surfacing Mn-Cr-V-alloyed rail crossings.
- Tensioner rollers, tracks, sliding guides and drive sprockets.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.17 |
| Cr | 2 |
| Mn | 1.5 |
| Si | 0.8 |
Mechanical properties
| Hardness | 330–380 HB |
|---|
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 AS SD-350 (Askaynak) | Direct replacement |
| Replaces UTP DUR 350 (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
- Machinable deposit.
- Higher hardness than HRF 300 (330-380 HB) for rolling parts.