Agglomerated submerged arc welding flux SJ301

welding flux SJ301

Name:                  Agglomerated submerged arc welding flux SJ301

AWS:                   AWS A5.17/5.23 F6A0-EL8 F7A2-EM12K

SAW wires:          EL8, EM12, EM12K, etc.

Power supply:       DC (DCEP), AC

Basicity:                1.0 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:              structural steel, H beams welding, submerged arc welded pipe, bridge building, ship building, pipeline, boilers, LPG tank, etc.

Description:          neutral type calcium-silicate based agglomerated flux. Excellent welding performance, easy slag removal, stable arc. It is featured with short slag, especially suitable for circumferential welding (girth welding). Also applicable for multi-pass welding, double-sided single-pass welding, multiwire welding fast welding.

Package:              damp-proof packing, 25kg/bag

Certification:          ISO

Chemical Composition of Flux (%)

SiO₂+TiO₂ CaO+MgO Al₂O₃+MnO CaF₂ S P
25-35 20-30 20-30 5-15 ≤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℃
EL8 ≥360 420-550 ≥22 ≥70 ≥50
EM12K ≥420 500-650 ≥22 ≥70 ≥50


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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