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Flux
MAXFLUX SAF -4
AWS: SFA 5.17 F6A2-EL8, F7A2-EM12K,F7A4-EM12K, F7A4-EH14
EN ISO CODE: 14174 SA FB 1 67 DC
Maxflux SAF-4 is an agglomerated basic type flux having very good performance with good sub-zero impact properties & extreme resistance to cracking. It is neutral in terms of silicon and manganese pick-up. Slag is easily removable and bead finish is smooth & shiny. The diffusible hydrogen content of the weld metal is low.
Maxflux SAF-4 is suitable for single & multi-layer welding of structural steels,
pressure vessels, boilers and other fabrications involving medium tensile & low
alloy steel.
Approvals
CE
IBR
CHEMICAL COMPOSITION OF ALL WELD METAL (%)
| WITH SAW WIRE | Elements | C | Mn | Si | S | P | Cu | |
| AUTOTHERME GRADE-A |
| 0.050 | 0.600 | 0.300 | 0.028 | 0.027 | 0.150 | |
| AUTOTHERME GRADE-B | Typical | 0.060 | 1.000 | 0.350 | 0.028 | 0.026 | 0.150 | |
| AUTOTHERME GRADE-C | Typical | 0.060 | 1.500 | 0.380 | 0.028 | 0.027 | 0.150 |
MECHANICAL PROPERTIES OF ALL WELD METAL
| WITH SAW WIRE | UTS | 0.2% YS | % EI | CVN Impact (Joules) | CVN Impact (Joules) | CVN Impact (Joules) |
| (Mpa) | (Mpa) | (L=4d) | -18°C | -29°C | -40°C | |
AUTOTHERME GRADE-A | 460 | 380 | 26 | 40 | 30 | - |
AUTOTHERME GRADE-B | 510 | 415 | 25 | 70 | 60 | 34 |
AUTOTHERME GRADE-C | 530 | 418 | 26 | 90 | 75 | 45 |
MAJOR CONSTITUTENTS
| SiO2 + TiO2 | CaO+MgO | Al2O3+MnO | CaF2 |
| 20% | 25% | 20% | 35% |
Flux
