BF 5
Agglomerated Welding Flux
Description & applications
A semi-basic agglomerated flux of the aluminatebasic type suitable for joint welding of low-alloy structural steels, fine-grain steels and pipe steel qualities.
Because of consistent weldability characteristics for both DC and AC welding as well as constant metallurgical flux characteristics BF is suitable for single and multi-wire SAW-processes to achieve uniform mechanical properties with low temperature toughness.
Excellent slag release and good weld bead performance providing smooth weld bead appearance with flat weld interfaces free from undercut even at a high current are additional features of the flux.
As a result of low diffusible hydrogen levels (max. 5 ml/100 g weld deposit), consistent Manganese and low Silicon and pick-up also pipes with thicker cross-sections can be welded in the multi-layer technique using Mo- and NiMo-wire electrodes acc. to EN 756
Classification
| EN 760 |
|---|
| SA AB 1 67 AC H5 |
Typical weld metal composition (%)
| SiO2 + TiO2 | Al2O3 + MnO | CaO + MgO | CaF2 |
|---|---|---|---|
| 20 | 30 | 30 | 15 |
Packaging
25 kg PE-bags or 500-1250 kg Big-Bags
Application Instructions
Fine-grain structural steels acc. to EN 10113 up to S460 and pipe steel qualities acc. to EN 10208-2/API-5L/5LX/5LS up to X 70 grade.
Flux Type
Aluminate-Basic
Flux Density
0.95 kg / dm³
Grain Size
2-20; Tyler 8 X 65
Current-Carrying Capacity
1000 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.