Agglomerated submerged arc welding flux SJ501

submerged arc welding flux SJ501

Name:                  Agglomerated submerged arc welding flux SJ501

AWS:                   AWS A5.17/5.23 F6A2-EL8 F6A2-EM12 F7A0-EL12 F7A2-EM12K

SAW wires:          EL8, EM12K, etc.

Power supply:       DC (DCEP), AC

Basicity:                0.5-0.8 BIIW.

Grain size:           10-60 mesh (0.28-2.0mm).

Alloy transfer:       Si, Mn alloying

Category:             submerged arc welding of mild steel & low-alloy steel

Industry:              LPG cylinder, gas bottle, pressure vessel, power plant, boiler water wall, etc.

Description:         acid type agglomerated alumina & rutile based flux. It is featured with stable arc, uniform weld metal surface, smooth welding bead appearance. SJ501 is for the use of multiwire high speed welding up to 70m/h. Especially suitable for boiler water-wall tubes welding, twin wire single pass welding, fillet welding, butt welding and thin sheet welding. High tolerance to impurities like rust, oil, water, paint, etc.

Package:              damp-proof packing, 25kg/bag

Certification:          ISO

Chemical Composition of Flux (%)

SiO₂+TiO₂ Al₂O₃+MnO CaF₂ S P
25-35 50-60 3-10 ≤0.03 ≤0.08

Mechanical Properties of Deposit Metal

Accompanied Wire Yield Strength ReH (δs) MPa Tensile Strength Rm (σb) MPa Elongation A (δ5)% Charpy-V lmpact Test (J)
+20℃ 0℃
EL12 ≥360 420-550 ≥22 ≥50 ≥27
EM12K ≥420 500-650 ≥22 ≥50 ≥27


1. We get values in data sheets from tests carried out in accordance to AWS and GB standard procedure. They only represent values we get under those conditions. They are not to be taken as guarantees. As to welding, individual test results may vary depending on experience & technique, flux type, base metal, joint preparation, flux preparation, ampere, voltage, etc. 

2. If welding fluxes are stored in improper environment or influenced by condensed moisture, anyway, they get damp, please dry them at 300-350℃ for 2 hours before usage.

3. Please clean the rust, oil, water on base metal before welding.

4. Add minumum 20% new flux when using recovered flux to avoid welding defects and maintain welding performance & mechanical properties.

5. Please control parameters properly, like preheat temperature, interpass temperature, cooling rate.

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