| state: | Solid |
|---|---|
| pH: | Neutral |
| Type: | Inorganic |
| Melting Point: | >600℃ |
| Chemical Composition: | SiO₂=10%-30% |
| Function: | Protect Weld Metal |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier SJ 301 EL12 EM12K welding flux is a kind of fluoride-alkaline-type slag-serial sintered
flux, mesh 10-60 meshes (2.0-3.0mm), basicity 1.6-1.8. It has great capacity of
sulphur removal, phosphor removal and anti- rust. The technology has a good
performance, easy to deslag and with fine appearance of weld, even in the narrow
gap of deep slope entrance. The metal welding seam has a good plastic -toughness,
with low diffusion of hydrogen and fine cold and heat crack resistance.
Usage:
The flux is fit for the submerged arc welding of low carbon steel and low alloy steel,
as well as the fast single-way and double-surface welding of thin steel sheet. And it
is usually used for the sumberged arc welding of liquefied gas storage tanks, gas
bottles, and pipeline steel.
Package:
25kg per kraft paper bag; 1000kg per Jumbo bag
Cautions:
1. The welding flux must be baked for 2hours at the temperature of 300-350ºC before
build up welding
2.Some foreign substances such as rust , grease and moisture on the weldment
should be removed before welding.
| Chemical composition of the flux SJ301(%) | |||||
| SiO2+TiO2 | CaF2 | Al2O3+MnO | CaO+MgO | S | P |
| 30-40 | 5-13 | 25-30 | 5-10 | ≤0.05 | ≤0.05 |
| Mechanical properties of the deposited metal | |||||
| Wires matched | Standard models | Yield point σs (MPa) |
Tensile Strength σb(MPa) |
Elongation δ5(%) |
Impact value AKV (J) |
| AWS EL12 | F6A0-EL12 | ≥350 | ≥420 | ≥22 | ≥50(0ºC) |
| AWS EM12K | F7A-EM12K | ≥410 | ≥500 | ≥22 | ≥50(0ºC) |
| Wires | Standard Models | σs (Mpa) |
σb (Mpa) |
δ5 | Akv (J) |
| HO8A HO8MnA |
F4A2-HO8A F5A4-HO8MnA |
≥350 ≥410 |
≥420 ≥500 |
≥22% ≥22% |
≥27(-20ºC) ≥27(-40ºC) |
Suppliers with verified business licenses
Audited Supplier 
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