Hardfacing
FERVEO HRF KST 55 FCW
flux-cored wire (FCW)Catalogue only
AWS class
MF 3-GF-55-ST
EN ISO class
T Z Fe 3
Hardness
52–57 HRC
Classification
| AWS class | MF 3-GF-55-ST |
|---|---|
| EN ISO class | T Z Fe 3 |
| DIN 8555 / EN 14700 | MF 3-GF-55-ST |
Purpose
- Metal-cored wire to repair hot- and cold-work tools, 52–57 HRC, with very good machinability.
Why it works
A wear-resistant alloy that reclaims hot-forging dies and builds up edges and flat areas of low-alloyed high-density steel tools. Metal core. Requires M21 gas.
Fields of application
- Repair of hot- and cold-work tools, reclaiming hot-forging dies.
- Equipment subject to high wear: buckets, excavators, mining crushers.
Chemical composition
| Element | Typical, % |
|---|---|
| C | 0.3 |
| V | 0.4 |
| W | 4.5 |
| Cr | 3.8 |
| Fe | balance |
| Mn | 0.28 |
Mechanical properties
| Hardness | 52–57 HRC |
|---|
Process
| Polarity | DC+ |
|---|---|
| Shielding gas | M21 |
| Requires shielding gas | Requires shielding gas |
Sizes and part numbers
| Ø | Current | Voltage | Packaging | Request |
|---|---|---|---|---|
| 1.2 mm | 150–220 A | 26–30 V | 15 kg |
Cross-reference
| Replaces SK D12-G (Soudokay) | 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
- 52–57 HRC with very good machinability.
- Reclaims hot-forging dies.
- Builds up edges and flat areas of tools.
Limitations
- Needs shielding gas (M21).