Introduction
HFK 408Nb-G is a valve sealing surface flux-cored wire for hardfacing. It has good wear and corrosion resistance as well as excellent thermal shock resistance.
Typical applications
Flux cored wire for mid-temperature high pressure valve surface sealing.
Chemical composition of deposited metal (%)
| C | Cr | Mo | Nb | Fe |
|---|---|---|---|---|
| <0.2 | 10.0–12.0 | 1.0–2.0 | <0.5 | Balance |
Mechanical properties
| Layers | Hardness (HRC) |
|---|---|
| All weld metal | 37–40 |
Recommended welding parameters
| Diameter: in (mm) | Current (A) | Voltage (V) |
|---|---|---|
| 1⁄16 (1.6) | 200–280 | 22–28 |
| Shielding gas | Gas flow: cfh (l/min) | Torch angle | Stick out: in (mm) |
|---|---|---|---|
| CO2 | 40 (20) | 80° | 1⁄2–3⁄4 (15–20) |
Diameters and packaging
| Diameter: in (mm) | Packaging: lb (kg) |
|---|---|
| 1⁄16 (1.6) | 33 (15) |
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| Click here to download the datasheet for Kooben HFK 408Nb-G. |
