Fused submerged arc welding flux HJ431

fused flux HJ431 for arc welding


Name:                  Fused submerged arc welding flux HJ431

AWS:                   AWS A5.17/5.23 F6A0-EL8 F6A2-EL12 F7A2-EM12K
SAW wires:          EL8, EL12, EM12K, etc.

Power supply:       DC (DCEP), AC

Basicity:                 0.7-0.8 BIIW.

Grain size:            8-40 mesh (0.45-2.5mm)

Alloy transfer:       Mn, Si alloying

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

Industry:              structural steel construction, pipes welding, boilers, pressure vessel, ship building, etc.

Description:          high Mn, high Si, low F fused flux. Glass-like granules. Excellent welding performance. Also suitable for electroslag welding and copper welding.

Package:              damp-proof packing, 25kg/bag

Certification:          ISO


Chemical Composition of Flux (%)



CaO MgO Al2O3 FeO S P
40-44 32-38 ≤8 5-8 ≤6 ≤1.8 ≤0.06 ≤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)
EL12 ≥330 415-550 ≥22 ≥27
EM12K ≥330 415-550 ≥22 ≥27


Email Us(*)Required information