Description & applications
• Low alloyed tubular composite electrode
• For high deposition rate submerged arc welding of high yield strength steels
• Recommended in conjunction with flux
APPLICATIONS
FCW A4 is designed for welding creep resisting steels of similar composition and high strength steels.
| Creep resisting steel |
EN 10028-2 P235GH to P355GH, 16Mo3 ASTM A336F1, A204 A, B & C |
| Fine-grained steels |
EN 10028-3 P275N to P355N EN 10113 S275N to S355N ASTM A335P1, A209 and A250T1 |
| Cast steels | ASTM A217WC1, A352LC1, GS-22Mo4 |
Classification
| AWS A 5.23 | ISO 14171-A |
|---|---|
| F8A2-EC-A4 / F8P0-EC-A4 | S 46 4 AB T3Mo |
Typical weld metal composition (%)
| C | Mn | Si | Mo |
|---|---|---|---|
| 0.1 | 1.45 | 0.25 | 0.55 |
All weld metal mechanical properties
| Rm (MPa) - as welded | Rp0.2 (MPa) - as welded | A5(%) - as welded | KV - as welded |
|---|---|---|---|
| 680 | 600 | 22 | -40°C: 55J |
Operating conditions
| Diameter [mm] | Current type | Amperage [A] | Voltage [V] | Stick out [mm] |
|---|---|---|---|---|
| 2.4 | DC(+) | 250-600 | 27-33 | 25-40 |
| 3.2 | DC(+) | 400-900 | 28-34 | 25-40 |
| 4.0 | DC(+) | 500-1000 | 29-34 | 25-40 |
Welding positions
Flat
Packings & Diameters
| Diameters [mm] | 2.4 - 2.8 - 3.2 - 4.0 | 2.4 - 2.8 - 3.2 - 4.0 |
|---|---|---|
| Packing(s) | Coil | Drum |
| Weight [Kg] | 25 | Up to 330 |
| Description | - | Other packaging: please consult us |