FCW 420O
Tubular wire for self-shielded arc hardfacing
Description & applications
• Tubular wire for self-shielded arc hardfacing
• 13% chromium martensitic stainless steel deposit
• Attractive combination of corrosion, oxidation, scaling and wear resistance
APPLICATIONS
FCW 420O is used for hardfacing and reclaiming components subject to moderate corrosion and metal-metal wear. The deposited alloy also has excellent gouging and abrasion resistant properties.
Examples
Extensively used as a cladding alloy on many types of steel industry rolling mill rolls such as table rolls, pinch rolls, scale breaker rolls, coiler rolls, leveller rolls and runout table rolls. Other applications include dragline rope sheaves, dragline rope drums, hydraulic plungers, certain types of valve seats, pulp rotors.
Classification
| DIN 8555 | EN 14700 |
|---|---|
| MF 6-GF-50-C | T Fe8 |
Typical weld metal composition (%)
| C | Mn | Si | Cr | Fe |
|---|---|---|---|---|
| 0.30 | 1.00 | 1.00 | 13.0 | Rest |
All weld metal mechanical properties
| Hardness – 3-Layer deposit |
|---|
| 50 HRc |
Shielding gas
| Current type | DC (+) |
|---|---|
| Shielding | Self shielded |
Operating conditions
| Diameter [mm] | Amperage [A] - Range | Amperage [A] - Optimum | Voltage [V] - Range | Voltage [V] - Optimum | Stick-out [mm] - Range | Stick-out [mm] - Optimum |
|---|---|---|---|---|---|---|
| 1.6 | 150-300 | 270 | 24-35 | 28 | 15-25 | 25 |
| 2.0 | 200-400 | 300 | 26-35 | 28 | 20-50 | 30 |
| 2.4 | 250-450 | 350 | 26-35 | 28 | 25-50 | 30 |
| 2.8 | 250-450 | 400 | 28-35 | 30 | 25-50 | 40 |
Welding positions
Flat, half up, half down
Packings & Diameters
| Diameters [mm] | ≤ 2.4 mm | ≥ 2.4 mm | ≥ 2.4 mm |
|---|---|---|---|
| Packing(s) | Spool : BS 300 | Coil : B 450 | Drum |
| Weight [Kg] | 15 | 25 | Up to 330 |
| Description | - | - | - |