59426 - Avesta ER2209 Duplex Stainless TIG Welding Rod 2.5mm (3/32") 10lb Box

High-Performance Avesta ER2209 TIG Welding Rods

The Avesta ER2209 TIG Rod is a premium-grade filler metal specifically engineered for the welding of duplex stainless steels, such as UNS S31803 and S32205 (commonly known as 2205). This 2.5mm (3/32") diameter rod is supplied in a 4.54 kg (10 lb) box, making it an ideal choice for industrial fabrication shops and field maintenance operations requiring high-integrity welds. Duplex stainless steels are characterized by their mixed microstructure of austenite and ferrite, which grants them exceptional mechanical properties and corrosion resistance. The ER2209 classification is over-alloyed with nickel compared to the base metal to promote the formation of austenite in the weld zone, ensuring the proper phase balance and mechanical toughness.

One of the primary advantages of using Avesta ER2209 is its outstanding resistance to stress corrosion cracking (SCC) and pitting, particularly in environments containing chlorides and hydrogen sulfide. This makes it the filler metal of choice for demanding industries such as offshore oil and gas, chemical processing, and desalination plants. The rod produces a weld deposit with high tensile strength and good ductility, meeting the rigorous standards required for pressure vessels and structural components. The chemical composition typically includes approximately 22% Chromium, 9% Nickel, and 3% Molybdenum, providing a Pitting Resistance Equivalent Number (PREN) that ensures longevity in harsh service conditions.

Welders using the Avesta ER2209 will appreciate its smooth running characteristics. The rod is manufactured to strict tolerances with a clean surface finish, ensuring consistent feeding and a stable arc during the Gas Tungsten Arc Welding (GTAW) process. It is designed to be used with 100% Argon shielding gas, although Ar/He mixtures can also be employed for specific applications. The weld pool is fluid and wets out nicely, allowing for the creation of aesthetically pleasing weld beads with minimal post-weld cleaning required. Whether welding pipe roots or filling heavy wall joints, this rod delivers reliable performance.

Storage and handling are straightforward, as the rods are packaged in a durable box to protect against moisture and contamination. For critical applications, it is recommended to ensure the base material is properly cleaned and prepared before welding. The Avesta ER2209 is also suitable for welding duplex stainless steels to carbon steels or standard austenitic stainless steels, providing versatility in mixed-metal fabrication scenarios. Trust in the metallurgical expertise of Avesta (Voestalpine Böhler Welding) for your critical duplex welding needs.