SJ501 Agglomerated Flux
Engineered for high‑strength steel & alloy‑recovery applications
TOKO SJ501 is a premium agglomerated submerged arc welding flux formulated for high‑tensile and quenched‑and‑tempered steels. It provides excellent alloy compensation when used with Mo, Cr‑Mo alloy wires, significantly enhancing weld strength and toughness. Ideal for thick‑plate multi‑pass welding with superb slag release and stable arc performance.
- Low hydrogen content (≤4ml/100g)
- High basicity (≥2.8) for superior toughness
- Excellent alloy recovery (Mo, Cr, Mn)
- Impact toughness ≥47J at -40°C
- Self‑peeling slag for clean welds
- Supports high heat input & thick plates
Type
Agglomerated
Basicity
≥ 2.8
Hydrogen Content
≤4 ml/100g
Matching Wire
AWS A5.23 / A5.28
Current Type
AC / DC+
Impact Temp.
-40°C
🔧 Technical Properties
- Flux Type Agglomerated (neutral)
- Grain Size 10 – 60 mesh
- Bulk Density 1.2 – 1.5 g/cm³
- Moisture Content ≤0.05%
- Phosphorus (P) ≤0.035%
- Sulfur (S) ≤0.025%
- Recommended Preheating 100 – 200°C (as required)
⚙️ Welding Parameters
- Current Range 450 – 1300 A
- Voltage Range 28 – 46 V
- Travel Speed 20 – 70 cm/min
- Wire Diameter 2.4 – 5.0 mm
- Heat Input 2.0 – 5.0 kJ/mm
- Electrode Extension 25 – 40 mm
- Joint Type Butt, Fillet, Lap
🏗️ Key Applications
🏗️ Crane Booms & Jibs
⛏️ Mining & Earthmoving Equipment
🪖 Military Vehicles & Armor
🏭 Heavy Machinery & Presses
🌉 Bridge & Structural Steel
⚙️ Pressure Vessels (high‑strength)
🚢 Shipbuilding (high‑tensile)
🏗️ High‑rise Steel Framing
📄 Technical Documents & Support
Download the SJ501 datasheet, safety data sheet, or request WPS support from our welding engineers.
📞 For bulk orders, custom formulations, or technical consultation, contact us at
office@tokoc.com or call (+86) 510-8359 5138.