







STRONGWIRE introduces STRONG FLUX 78X, a premium agglomerated submerged arc welding flux developed for welding high-strength structural steels and critical fabrication components. Engineered to deliver exceptional weld quality, superior toughness, and reliable mechanical properties, STRONG FLUX 78X is ideal for demanding industrial applications where strength and durability are essential.
Designed for use in automated and semi-automated submerged arc welding processes, this advanced flux helps manufacturers achieve consistent weld performance, increased productivity, and dependable structural integrity across heavy fabrication projects.
| SiO₂ + Al₂O₃ + TiO₂ | CaO + MgO + MnO | CaF₂ | S | P |
|---|---|---|---|---|
| 25-40 | 35-50 | 25-30 | 0.035 MAX | 0.040 MAX |
| SAW Wire | Y.S. (MPa) | U.T.S. (MPa) | Elongation (L=4D) (%) | CVN Impact -20°C (J) | Typical Strength Class |
|---|---|---|---|---|---|
| EM2 | 540 | 660 | 26 | 85 | Medium-High |
| EM3 | 580 | 700 | 24 | 75 | High |
| EM4 | 630 | 760 | 22 | 75 | Higher Strength |
| EF1 | 560 | 680 | 22 | 75 | High Strength |
| EF2 | 660 | 780 | 20 | 70 | High Tensile |
| EF3 | 680 | 800 | 18 | 60 | High Tensile |
| EF4 | 700 | 830 | 17 | 48 | Wear/Strength |
| EF5 | 725 | 855 | 16 | 55 | Very High Strength |
| EF6 | 680 | 800 | 17 | 75 | High Toughness |
| EG | 825 | 940 | 15 | 48 | Ultra High Strength |
STRONG FLUX 78X is a high-performance agglomerated SAW flux specifically formulated for welding high tensile and high-strength steels. This submerged arc welding flux 78X is designed to produce weld deposits with excellent toughness, low hydrogen characteristics, and superior resistance to cracking.
The flux is widely used in industries requiring high-strength welds, including heavy machinery manufacturing, crane fabrication, structural engineering, mining equipment production, and infrastructure development.
STRONG FLUX 78X is a premium submerged arc welding flux engineered for high-strength steel fabrication and critical industrial welding applications. Its low hydrogen characteristics, superior toughness, and excellent weld quality make it an ideal choice for manufacturers seeking reliable welding performance in demanding environments.
Supported by STRONGWIRE’s commitment to quality, innovation, and technical expertise, STRONG FLUX 78X delivers the performance required for modern heavy fabrication and structural welding projects.
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