TG418093638 - Lincoln Techalloy 418 (ERNiCu-7) TIG Rod - 3/32 Inch - 10lb Tube

Premium Nickel-Copper TIG Consumable for Critical Applications

The Lincoln Techalloy 418 is a high-performance TIG welding rod classified as ERNiCu-7, specifically engineered for the welding of nickel-copper alloys. This 3/32-inch diameter rod is supplied in a 10lb tube, making it an essential consumable for industrial fabrication shops dealing with specialized marine and chemical processing equipment. Techalloy 418 is formulated to meet the stringent requirements of AWS A5.14, ensuring that every deposit meets the mechanical and chemical properties necessary for high-stress environments.

One of the primary technical advantages of Techalloy 418 is its versatility in dissimilar welding applications. It is the industry standard for joining Nickel 200 to copper-nickel alloys, as well as welding Monel 400, R-405, and K-500 series alloys. The chemical composition, roughly 65% nickel and 30% copper with additions of titanium and manganese, provides exceptional resistance to corrosion by seawater, salts, and reducing acids. This makes it a critical component in the fabrication of desalination plants, offshore piping systems, and heat exchangers.

Lincoln Electric employs rigorous lot testing on all Techalloy products. Each batch undergoes detailed chemical analysis and mechanical testing to verify compliance with industry standards. Users can access actual wire chemistry and typical mechanical results through online certificates, providing the traceability required for code-compliant work. The manufacturing process ensures a clean wire surface, free from contaminants that could introduce porosity or inclusions into the weld pool, thereby facilitating high-quality radiographic results.

This rod is designed for the Gas Tungsten Arc Welding (GTAW) process and performs best with 100% Argon or an Argon/Helium shielding gas mixture. The controlled composition ensures proper wetting characteristics and bead profile, reducing post-weld cleaning and grinding time. For MRO distributors and procurement specialists, the Techalloy 418 represents a reliable, certified solution for maintenance and repair operations involving copper-nickel piping and marine hardware.