RAF 50 can be used for generic welding & for welding of boilers, pressure vessels, pipelines & ship-building. The welding
process could be Single Wire, Twin Wire, Tandem & Multi Wire submerged arc welding as well as two-run technique.
The flux is suitable for welding of General Structure Steels (Mild Steels, 490 MPa & 590 MPa High Strength Steels);
Plate Steels (A32, A36, D32); Pipe Steels (X42, X46, X52, X65) & Boiler Steels (17Mn4, 19Mn5, 15Mo3).
| CaO + MgO +Al2O3 | Al2 O3 | CaF2 |
|---|---|---|
| 55 | 25 | 18 |
| Wire | Carbon | Manganese | Silicon | Molybdenum |
|---|---|---|---|---|
| Royal SW EL8 | 0.04 – 0.10 | 0.80 – 1.30 | 0.30 – 0.50 | |
| Royal SW EM12K | 0.05 – 0.10 | 1.10 – 1.50 | 0.30 – 0.50 | |
| Royal SW EH14 | 0.05 – 0.10 | 1.40 – 1.60 | 0.20 – 0.35 | |
| Royal SW EA2 | 0.05 – 0.10 | 1.00 – 1.30 | 0.20 – 0.35 | 0.20 – 0.40 |
| Wire | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Charpy V Notch Impact Values (J) | |||
|---|---|---|---|---|---|---|---|
| Zero Deg C | -20 Deg C | -30 Deg C | -40 Deg C | ||||
| Royal EL8 | 400 – 470 | 490 – 570 | 22 – 30) | Charpy V Notch Impact Values (J) | |||
| 75 – 95 | 50 – 70 | – | – | ||||
| Royal EM12K | 430 – 520 | 490 – 620 | 22 – 30 | Charpy V Notch Impact Values (J) | |||
| – | – | 70 – 100 | – | ||||
| Royal EH14 | 430 – 520 | 490 – 620 | 22 – 30 | Charpy V Notch Impact Values (J) | |||
| – | – | – | 60 – 90 | ||||
| Royal EA2 | 480 – 590 | 550 – 690 | 20 – 25 | Charpy V Notch Impact Values (J) | |||
| – | 55 – 80 | – | – | ||||
Dry the flux at 300 – 350 C for minimum 60 minutes before use.
The flux is packed in moisture proof paper bag of 25 kg each