ERNiCrMo-3 Welding Wire (Inconel 625 / UNS N06625 / ERNiCrMo3 / Nickel Alloy 625 Filler) – Corrosion-Resistant Nickel Alloy Filler Metal for Extreme Environments
Product Description
ERNiCrMo-3 is a solid nickel-chromium-molybdenum alloy welding wire used for welding Inconel® 625 and similar corrosion- and heat-resistant alloys. This filler metal offers exceptional resistance to pitting, crevice corrosion, intergranular attack, and stress corrosion cracking in a wide variety of severely corrosive environments, including seawater, acids, and oxidizing/reducing atmospheres.
It is widely used for both overlay cladding and joining applications in industries such as chemical processing, marine, power generation, and aerospace. ERNiCrMo-3 is suitable for TIG (GTAW) and MIG (GMAW) processes.
Key Features
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Exceptional resistance to seawater, acids (H₂SO₄, HCl, HNO₃), and high-temperature oxidizing/reducing atmospheres
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Excellent pitting and crevice corrosion resistance in chloride-rich environments
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Outstanding weldability with smooth arc, minimal spatter, and clean bead appearance
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Maintains mechanical strength up to 980°C (1800°F)
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Highly resistant to stress corrosion cracking and intergranular corrosion
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Ideal for dissimilar metal welds, overlays, and hardfacing
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Conforms to AWS A5.14 ERNiCrMo-3 and UNS N06625
Common Names / Designations
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AWS: ERNiCrMo-3
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UNS: N06625
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Equivalent: Inconel® 625
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Other Names: Nickel Alloy 625 filler metal, Alloy 625 TIG wire, 2.4831 welding wire
Typical Applications
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Marine components and offshore structures
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Heat exchangers, chemical processing vessels
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Nuclear and aerospace structures
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Furnace hardware and flue gas scrubbers
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Cladding on carbon or stainless steel for corrosion resistance
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Dissimilar welding between stainless steel and nickel alloys
Chemical Composition (% Typical)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | ≥ 58.0 |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Iron (Fe) | ≤ 5.0 |
| Niobium (Nb) + Ta | 3.15 – 4.15 |
| Manganese (Mn) | ≤ 0.50 |
| Carbon (C) | ≤ 0.10 |
| Silicon (Si) | ≤ 0.50 |
| Aluminum (Al) | ≤ 0.40 |
| Titanium (Ti) | ≤ 0.40 |
Mechanical Properties (Typical As-Welded)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 760 MPa |
| Yield Strength | ≥ 400 MPa |
| Elongation | ≥ 30% |
| Service Temperature | Up to 980°C |
| Corrosion Resistance | Excellent |
Available Specifications
| Item | Detail |
|---|---|
| Diameter Range | 1.0 mm – 4.0 mm (Standard: 1.2 / 2.4 / 3.2 mm) |
| Welding Process | TIG (GTAW), MIG (GMAW) |
| Packaging | 5kg / 15kg spools or TIG cut rods (custom length available) |
| Surface Condition | Bright, rust-free, precision-layer wound |
| OEM Services | Private label, barcode, customized box/packaging support |
Related Alloys
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ERNiCrMo-4 (Inconel 686)
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ERNiCrMo-10 (C22)
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ERNiFeCr-2 (Inconel 718)
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ERNiCr-3 (Inconel 82)
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ERNiCrCoMo-1 (Inconel 617)
