ESAB OK Tigrod 347Si
The ESAB OK Tigrod 347Si is a bare, corrosion-resisting chromium-nickel TIG rod, ideal for welding austenitic chromium-nickel alloys of the 18% Cr-8% Ni-type. Its silicon-enriched formula enhances wetting and improves the welding properties, making it easier to achieve clean, uniform welds. The alloy is stabilized with Niobium (Nb), providing resistance against intergranular corrosion, even at elevated temperatures. This makes OK Tigrod 347Si particularly suited for high-temperature environments.
Compared to ESAB OK Tigrod 347, OK Tigrod 347Si offers an increased silicon content. This significantly improves weldability by enhancing fluidity and wetting. It results in smoother welds with less spatter, especially useful for complex or high-precision welding jobs.
Key Features of ESAB OK Tigrod 347Si
- Niobium Stabilized: Ensures resistance to intergranular corrosion, making it suitable for high-temperature welding.
- Enhanced Silicon Content: Improves fluidity and wetting, resulting in smoother welds with better appearance and performance.
- Excellent Corrosion Resistance: Provides reliable protection against general corrosion, ideal for use in aggressive environments.
- High-Temperature Application: Performs well in welding components exposed to elevated temperatures, ensuring long-term durability.
- Certified Quality: Classified under AWS A5.9 ER347Si and approved by various international standards, including CE and VdTÜV.
Key Industry Applications
- Chemical and Petrochemical Industry: Ensures reliable welds for components exposed to corrosive chemicals and high temperatures, such as heat exchangers and reactors. The rod’s niobium stabilization adds strength and longevity to welds in chemical plants.
- Power Generation: Ideal for fabricating and repairing boilers, turbines, and piping systems, especially where corrosion resistance and heat resistance are essential. This rod helps maintain the integrity of high-temperature components over time.
- Food Processing Equipment: Delivers strong, corrosion-resistant welds for food-grade equipment that must withstand harsh cleaning chemicals and high temperatures.
- Automotive Industry: Provides reliable welds for automotive exhaust systems and other high-temperature parts, such as those requiring strength and resistance to corrosion.
- General Fabrication: Suitable for welding stainless steel structures used in various industrial applications. The welded rod offers durability and enhanced resistance to environmental stresses.
Specifications
| Feature | Details |
|---|---|
| Alloy Type | Austenitic (19% Cr – 9% Ni – Nb) |
| Classification | AWS A5.9 ER347Si |
| Tensile Strength | 640 MPa |
| Yield Strength | 440 MPa |
| Elongation | 35% |
| Impact Toughness | 75 J at -60°C |
| Silicon Content | 0.7% |
The ESAB OK Tigrod 347Si provides enhanced weldability and corrosion resistance, making it an excellent choice for high-temperature applications in the chemical, power generation, and automotive industries. Its improved wetting characteristics ensure smooth, reliable welds in even the most challenging environments.
