ERNiCrMo-3 welding wire is a premium-grade product designed for Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW) of advanced nickel-chromium-molybdenum alloys. Conforming to the Chinese specification GB/T 15620 SNi6625 and international standards AWS A5.14, ERNiCrMo-3, ASME II, SFA-5.14, ERNiCrMo-3, UNS N06625, and Werkstoff Nr. 2.4831, this wire is engineered for demanding applications requiring superior weld quality and mechanical performance.

Applications

ERNiCrMo-3 is specifically developed for welding a range of high-performance alloys, including Inconel 601, Inconel 625, Incoloy 825, and high alloy austenitic and super austenitic stainless steels. Its versatility extends to dissimilar welding applications, where it is used to join Inconel alloys, Incoloy alloys, and low alloy steel, stainless steels, and carbon steels. This makes ERNiCrMo-3 an ideal choice for industries such as chemical processing, power generation, and marine engineering, where resistance to corrosion and high temperatures is critical.

Chemical Composition

The effectiveness of ERNiCrMo-3 in demanding environments is rooted in its carefully balanced chemical composition, designed to provide exceptional resistance to corrosion, oxidation, and high-temperature degradation. The main chemical components and their respective percentages are as follows:

Nickel (Ni): ≥58%

Carbon (C): ≤0.1%

Manganese (Mn): ≤0.5%

Iron (Fe): ≤1.0%

Sulfur (S): ≤0.015%

Copper (Cu): ≤0.50%

Silicon (Si): ≤0.50%

Aluminum (Al): ≤0.4%

Titanium (Ti): ≤0.4%

Chromium (Cr): 20-23%

Niobium (Nb): 3.15-4.15%

Molybdenum (Mo): 8-10%

Phosphorus (P): ≤0.02%

This precise formulation ensures that ERNiCrMo-3 delivers reliable and consistent performance, making it ideal for welding in environments where strength, durability, and corrosion resistance are paramount.

Mechanical Properties

ERNiCrMo-3 welding wire is engineered to provide outstanding mechanical properties, particularly in terms of tensile strength and elongation. With a minimum tensile strength of 105,000 psi (724 MPa) and an elongation percentage of 30%, this wire ensures that welded joints are both strong and flexible, capable of withstanding significant stress and strain without compromising integrity.

Product Forms and Specifications

ERNiCrMo-3 is available in various forms to accommodate different welding techniques and preferences:

Straight Rods (TIG): Available in diameters ranging from 1.2mm to 3.2mm, these rods are perfect for Gas Tungsten Arc Welding (GTAW), providing precise control and superior weld quality.

Spooled Wire (MIG): Offered in diameters from 0.8mm to 1.2mm, this spooled wire is designed for Gas Metal Arc Welding (GMAW), ensuring consistent feeding and optimal performance during welding operations.

Both forms are manufactured with precision layer winding for the spooled wire, ensuring easy handling and minimal downtime during use.

Conclusion

ERNiCrMo-3 welding wire is a high-performance solution for industries requiring reliable, high-quality welds in challenging environments. Its excellent chemical composition, superior mechanical properties, and availability in various product forms make it the go-to choice for welding nickel-chromium-molybdenum alloys and dissimilar materials. Whether in chemical processing, power generation, or marine applications, ERNiCrMo-3 provides the strength, durability, and resistance needed to meet the most demanding industry standards.