ERNiCrMo-3 Tig Rod

 

ERNiCrMo-3 is a nickel-chromium-molybdenum-niobium alloy welding wire conforming to AWS A5.14 standard, with a deposited metal composition identical to the renowned Inconel 625 (UNS N06625) alloy. Its exceptional corrosion resistance, excellent mechanical properties at high and low temperatures, and outstanding weldability make it an ideal choice for critical welding applications in chemical, energy, marine, and cryogenic engineering industries.

ERNiCrMo-3 welding wire is suitable for various welding methods, offering flexible process options.

• GTAW (TIG welding): Uses straight welding rods, suitable for high-quality, precision welding, especially for thin plates and root passes.
• GMAW (MIG welding): Uses spooled welding wire, offering high welding efficiency, suitable for filling and capping of medium-thick plates.
• SAW (Submerged Arc Welding): Can be used with suitable fluxes for automated welding of thick-walled structures, providing extremely high deposition efficiency.
• Cladding: Used for depositing corrosion-resistant alloy layers on the surface of carbon steel or low-alloy steel to save costs and extend equipment life.
• Dissimilar Welding: Specifically used for joining dissimilar materials such as nickel-based alloys with stainless steel, high-nickel alloys, or 9% nickel steel.

Process Key Points: Pure argon or argon-helium mixed gas shielding is recommended. Strict control of interpass temperature is required, and the workpiece surface must be thoroughly cleaned before welding.

 

 

1. Exceptional Corrosion Resistance: Exhibits excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride media, making it suitable for harsh chemical and marine environments.
2. Wide Temperature Adaptability:

• Low Temperature (Cryogenic): Maintains excellent impact toughness at extremely low temperatures down to -196°C, making it the preferred welding material for equipment such as liquefied natural gas (LNG) storage tanks.
• High Temperature: Maintains high strength and oxidation resistance in environments up to 540°C (1000°F).

 3.Excellent Mechanical Properties: The deposited metal has high strength and good ductility (typical values: tensile strength ≥760 MPa, elongation ≥30%), ensuring safe and reliable welded joints.

 4.Superior Weldability: Features a wide welding process window, good fluidity, aesthetically pleasing weld bead formation, and low susceptibility to hot cracking. 

 

ERNiCrMo-3 welding wire is widely used in the following materials and applications:

Welding of similar and dissimilar alloys:
Inconel 625 (Alloy 625) itself.
Nickel-based and iron-nickel-based alloys such as Inconel 601, Incoloy 800/825, and Alloy 25-6Mo.
Dissimilar metal joining:
Welding between nickel-based alloys and stainless steel (such as 304, 316).
Used for welding 9% nickel steel in the manufacture of cryogenic pressure vessels.

Key Industrial Sectors:

• Chemical and Oil & Gas: Reactors, heat exchangers, pipelines, flue gas desulfurization systems.
• Marine Engineering: Seawater treatment equipment, ship chemical cargo tanks.
• Energy and Environmental Protection: Nuclear power components, waste incineration equipment.
• Aerospace: Engine components, high-temperature pipelines.

 

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