Submerged Arc Welding (SAW) Fluxes

Premium agglomerated & fused fluxes for high-integrity welds in shipbuilding, pipelines, pressure vessels, and heavy fabrication. Grades SJ101, SJ301, SJ501, SJ102, SJ302, SJ601 – engineered for superior toughness and productivity.

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TOKO Submerged Arc Welding (SAW) Fluxes

High-performance SAW fluxes – SJ101, SJ301, SJ501, SJ102, SJ302, SJ601 – meeting AWS A5.17 / A5.23 / A5.9 standards. Optimized for carbon steel, HSLA, stainless, and pipeline welding.

TOKO SAW Flux SJ501 and submerged arc welding process

Why Choose TOKO SAW Flux?

  • Superior arc stability & bead appearance – reduces post-weld cleanup.
  • Low hydrogen content (H4/H5) – eliminates underbead cracking risks.
  • Excellent slag self-detachment for high deposition efficiency.
  • AWS & ISO compliant – certified for critical infrastructure projects.
  • Wide wire compatibility – ER70S-6, EH14, Ni-based, 309L/316L.

Key Industrial Applications

  • Shipbuilding & offshore platforms
  • Structural steel (bridges, high-rises)
  • Oil & gas pipelines (API 5L X60–X80)
  • Pressure vessels & boilers
  • Heavy earthmoving equipment
  • Stainless steel chemical tanks

Complete TOKO SAW Flux Portfolio

TOKO SJ101 – Agglomerated Flux

Agglomerated • High Toughness

Best for: High-strength low-alloy (HSLA) steels, quenched & tempered steels, offshore structures, wind towers. Delivers excellent low-temperature impact toughness (-40°C / -40°F).

Low hydrogen content (≤4ml/100g) prevents cold cracking.
Outstanding Charpy V-notch values >70J at -40°C with Ni wire.
Recommended with AWS A5.23: EB3, EB6 wires.
Smooth slag removal, ideal for multi-pass welding.

Classification: Meets AWS A5.23 / F8A8-EC-Ni2 etc.

TOKO SJ301 – Fused Flux

Fused • All-Position

Best for: Carbon steels, mild steels in shipbuilding, structural beams, and general fabrication. High resistance to moisture absorption, stable AC/DC operation.

Low moisture pickup – no baking required under normal conditions.
Excellent bead contour and uniform weld deposit.
Matches ER70S-3, ER70S-6 wires per AWS A5.17.
High deposition rates with minimal spatter.

Classification: Conforms to AWS A5.17 (F7A2-EM12K / F7A4-EM12K).

TOKO SJ501 – Agglomerated Flux

Agglomerated • Alloy Recovery

Best for: High-tensile steels, crane booms, mining equipment, military vehicles. Excellent alloy compensation and crack resistance.

Superior impact properties even at high heat input.
Works with Mo, Cr-Mo wires for enhanced strength.
Ideal for heavy plate welding and multi-run applications.
Smooth slag detachability and excellent wetting.

TOKO SJ102 – Agglomerated Flux

Agglomerated • Pipeline Grade

Best for: Micro-alloyed steels, API X60-X80 line pipes, offshore pipelines. Ultra-low hydrogen and superb low-temperature toughness down to -50°C.

Optimized for high-speed circumferential welding.
Minimizes porosity in narrow-groove configurations.
Compatible with AWS A5.28 ER80S-G and high-purity wires.

TOKO SJ302 – Fused Flux

Fused • High-Speed

Best for: Automotive frames, railway components, general carbon steel fabrication. Provides high deposition rates and exceptional slag release.

Stable arc under high current, suitable for twin-arc welding.
Good resistance to rust and mill scale on base metal.
Cost-effective solution for high-volume production.

TOKO SJ601 – Agglomerated Flux

Agglomerated • Stainless Steel

Best for: Austenitic stainless steels (304, 316, 347). Preserves corrosion resistance and minimizes carbide precipitation.

High chromium recovery with stable ferrite content.
Low carbon transfer prevents intergranular corrosion.
Matching wires 309L, 316L for chemical & food-grade applications.

Technical Insight: Agglomerated vs. Fused Flux

  • Agglomerated (SJ101, SJ501, SJ102, SJ601) – Allows precise alloying, best for high-strength, alloyed steels and demanding mechanical properties. May require baking prior to use.
  • Fused (SJ301, SJ302) – Economical, vitreous structure, lower moisture absorption, ideal for carbon steel and mild steel high-speed welding.

Storage Tip: Agglomerated fluxes should be stored in a dry environment and rebaked at 300-350°C for 1-2 hours if exposed to humidity. Fused fluxes are more resistant but still require dry storage.

Global Compliance & Quality Assurance

  • ISO 9001:2015 certified manufacturing facilities.
  • Routinely tested for hydrogen content, moisture resistance, mechanical properties.
  • Third-party verification to AWS, ASME, and EN standards.
  • Trusted by shipyards, pipeline contractors, and structural fabricators worldwide.

📄 Technical Resources & Safety Data Sheets

📥 SJ101 Datasheet (PDF) 📥 SJ301 Datasheet (PDF) 📥 SJ501 Datasheet (PDF) 📥 HJ107 (Submerged Arc) ⚠️ Safety Data Sheet (SDS)

For complete weld procedure specifications (WPS) or custom flux formulations, contact our welding engineers.