HJ431 Agglomerated Flux
Specialized for austenitic stainless steel fabrication
TOKO HJ431 is an agglomerated submerged arc welding flux developed specifically for welding 304, 316, and 347 austenitic stainless steels. It provides high chromium and nickel recovery, minimizes carbon pickup, and effectively prevents intergranular corrosion. When used with AWS A5.9 309L or 316L wires, it delivers excellent corrosion resistance and mechanical properties, making it ideal for chemical, food, and pharmaceutical grade equipment.
- Low hydrogen content (≤4ml/100g)
- High Cr recovery & low carbon transfer
- Ferrite number FN 4–8 for crack resistance
- Excellent slag detachability
- Prevents intergranular corrosion
- Smooth bead appearance
Type
Agglomerated
Basicity
≥ 2.0
Hydrogen Content
≤4 ml/100g
Matching Wire
AWS A5.9 309L / 316L
Ferrite Number
FN 4 – 8
Current Type
AC / DC+
🔧 Technical Properties
- Flux Type Agglomerated (basic)
- Grain Size 10 – 60 mesh
- Bulk Density 1.3 – 1.5 g/cm³
- Moisture Content ≤0.05%
- Chromium Recovery ≥ 95%
- Carbon Transfer ≤ 0.04%
- Recommended Preheating 150 – 200°C (as required)
⚙️ Welding Parameters
- Current Range 350 – 1000 A
- Voltage Range 26 – 40 V
- Travel Speed 20 – 60 cm/min
- Wire Diameter 2.0 – 4.8 mm
- Heat Input 1.5 – 4.0 kJ/mm
- Electrode Extension 20 – 30 mm
- Joint Type Butt, Fillet, Lap
🏗️ Key Applications
🧪 Chemical Processing Equipment
🍽️ Food & Beverage Tanks
💊 Pharmaceutical Vessels
⚓ Marine & Offshore Stainless
🏭 Pulp & Paper Machinery
🛢️ Heat Exchangers & Condensers
🏗️ Architectural Stainless Steel
⚙️ Cryogenic Vessels (stainless)
📄 Technical Documents & Support
Download the HJ431 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.