AWS/SFA 5.23: F11(A)4 EM4-M4
DESCRIPTION:
Geeflux 550 is an agglomerated basic flux for submerged arc welding. It is used for single and multi-run welding of all plate thickness. It works equally well with DC & AC current. The good slag detachability & limited alloying of Si & Mn makes it well suited for multi pass thick section welding. High Welding speed can be achieved producing a finely rippled weld metal, all this in combination with very good impact value.
Damp flux must be redried at 350degree centigrade, for 2 hours minimum.
Application:
IT's one of the most used SAW Flux, not just for fine grained steels, but for welding Q & T steels such ASTM A 517 Gr B, Gr F etc, fabrication of penstocks in hydropower projects, etc.
GRAIN SIZE: 0.2-2.0 mm
Main constituents:
|
SiO2 + TiO2 |
CaO+MgO |
Al2O3+MnO |
CaF2 |
|
15% |
40% |
20% |
25% |
Weld metal Composition:
|
C |
Mn |
Si |
S |
P |
Cu |
Ni |
Mo |
Cr |
Ti+V+Zr |
|
0.10max |
1.30-2.25 |
0.80 max |
0.020 max |
0.020 Max |
0.30 Max |
2.0-2.80 |
0.30-0.80 |
0.80 max |
0.03 max |
Mechanical properties of Weld metal:
UTS(MPa) |
YS(MPa) |
ELN (%)(L=4D) |
CVN ImpactStrength |
|
760 - 896 |
676 min |
15 min |
Temp. |
Joules |
- 40°C |
47 Min |
|||
Basicity as boniszewaski = 3.1
Packing Specification
Plastic drum :20 KG Flux
WIRE: EM4
|
C |
Mn |
Si |
S |
P |
|
0.10 max |
1.40-1.80 |
0.20-0.60 |
0.015 max |
0.010 max |
|
Mo |
Cu |
V |
Ti |
Zr |
|
0.30-0.65 |
0.25 max |
0.03 max |
0.10 max |
0.10 max |
|
Cr |
Ni |
Al |
|
|
|
0.60 max |
2.0-2.80 |
0.10 max |
|
|