Conforming to：：GB/T12470 S49S2MS-SU34
Equivalent to： AWS F7A0-EH14 JIS YSF-W41
Description: HJ350 is defined as fused type fluxes medium-manganese, medium-silicate and medium fluorine elements, color in brown to high yellow, with vitreous granules 8-40 meshes in size. Fluxes are suitable for use both AC and D.C. When applying D.C, filler-wire will be connected to electrode positive (EP). Fluxes have good welding technological behavior.
Field of application: Fluxes match proper filler-wire (i. e SU26、SU34、SUM3 etc) of which may be use for welding of low-alloyed steel (i. e. 16Mn、15MnVN、15MnV etc) important structures for example: ships, boilers, pressure vessels etc. As required by fine-granule fluxes, they can be used for SAW with filler-wire to serve thin-plating weld.
Typical compositions of fluxes in: (%)
|
MnO+SiO2 |
CaF2+CaO+Al2O3 |
S |
P |
|
44-55 |
37-56 |
≤0.035 |
≤0.04 |
Typical mechanical properties of deposited metals combined filler-wire and flux:
|
Filler-wire Selected |
ó b MPa |
ó s MPa |
δ 5 % |
AKV(J) | |
|
0℃ |
-20℃ | ||||
|
Guaranteed Value |
480-660 |
≥400 |
≥22 |
>27 |
>27 |
|
EH14 |
524 |
410 |
31 |
115.3 |
55 |
Remarks:
1.Before welding, fluxes need to be baked for two（2）hours at around 300-350℃.
2.Removal of rust, oil, dirt, water, impurities etc in welding-areas.