BF 1
Agglomerated Welding Flux
Description & applications
Designed for all SAW-processes and welding of ordinary carbon-manganese, low alloy structural and boiler quality steels with a yield strength up to 355N/mm² (t<25 mm) in combination with wire grades S1, S2, S2Mo and S CrMo1.
The flux is suitable for high speed welding (up to 2m/min.) and provides very good weld bead appearance and excellent slag release even with small angle preparation and fillet welds.
The chemical nature of BF 1 flux provides high resistance to cracking on single pass applications. Additional features are resistance to porosity when welding rusty plates, heavy scale or other contaminations of plate surfaces (e.g. special primer-coatings) and low sensitivity towards arc blow.
Classification
| EN 760 | ISO 14174 |
|---|---|
| SA AR 1 76 AC | S A AR 1 76 AC H5 |
Typical weld metal composition (%)
| SiO2 + TiO2 | Al2O3 + MnO | CaO + MgO | CaF2 |
|---|---|---|---|
| 25 | 55 | 5 | 10 |
Packaging
25 kg PE-bags or 500-1250 kg Big-Bags
Application Instructions
Preferentially used for single run, two-run and fillet SA-welding. Main fields of application include structural steelwork, thin-walled containers, LP-gas cylinders and fin-tube walls.
Metallurgical Behaviour
Flux Type
Aluminate-Rutile
Flux Density
1.0 kg / dm³
Grain Size
2-16; Tyler 10 x 65
Current-Carrying Capacity
800 A (DC or AC) using one wire
Storage and redrying
The flux can be stored up to 3 years after delivery in dry storage rooms. Flux that has picked up moisture has to be redried at 150 to 250°C effective flux temperature.