BF 10
Agglomerated Welding Flux
Description & applications
BF 10 is a fluoride-basic flux with high basicity and low impurity levels such as P and S. It is suitable for welding on DC and AC using single and tandem wire processes. Because of the almost neutral slag-reactions the chemical analysis of the weld metal can be excellently controlled through the selection of appropriate wire electrodes.
Classification
| EN 760 | ISO 14174 |
|---|---|
| SA FB 1 55 AC | S A FB 1 55 AC |
Typical weld metal composition (%)
| SiO2 + TiO2 | Al2O3 + MnO | CaO + MgO | CaF2 |
|---|---|---|---|
| 15 | 20 | 40 | 25 |
Packaging
25 kg PE-bags
Application Instructions
Low hydrogen levels and optimum mechanical properties enable the welding of:
-thick-walled constructional steels with yield strengths of up to 420 N/mm², also after a post weld heat treatment (580°C/15h) with wire S3Si.
-OFF-SHORE applications up to 460 N/mm² yield strength on steels such as BS 4360-Grade 50 D and S355 J2G3 acc. to DIN EN 10025 (previous designation St 52-3N).
-Fine grain structural steels for low temperature requirements with impact toughness at -60°C or below.
-High tensile fine grain steels such as N-A_XTRA 70.
-Boiler and vessel steels such as 16Mo3 / A335 Gr. P1 or 13CrMo4-5 / A333 Gr. P11.
Metallurgical Behaviour
Flux Type
Fluoride-Basic
Grain Size
3-20; Tyler 8 x 48
Current-Carrying Capacity
up to 800 A (DC or AC) using one wire
Storage and redrying
The flux should be stored in dry storage rooms. Flux that has picked up moisture has to be redried at 300 to 350°C effective flux temperature.