Huona (Shanghai) New Material Co., Ltd.
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ERNiCrMo-4 is a premium nickel-chromium-molybdenum-tungsten (NiCrMoW) alloy welding wire designed for the most demanding corrosion environments. Equivalent to Inconel 686 (UNS N06686), this wire delivers exceptional resistance to a wide range of corrosive media including strong oxidizers, acids (sulfuric, hydrochloric, nitric), seawater, and high-temperature gases.
Ideal for both cladding and joining, ERNiCrMo-4 is widely used in chemical processing, flue gas desulfurization (FGD) systems, marine engineering, and pollution control equipment. Compatible with TIG (GTAW) and MIG (GMAW) welding processes, it provides crack-free, durable welds with excellent mechanical and corrosion-resistant performance.
Outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking
Performs in aggressive oxidizing and reducing environments including wet chlorine, hot acids, and seawater
High-temperature strength and structural stability up to 1000°C
Excellent weldability and arc stability in both MIG and TIG processes
Suitable for overlay welding on carbon or stainless steel components
Conforms to AWS A5.14 ERNiCrMo-4 / UNS N06686
AWS: ERNiCrMo-4
UNS: N06686
Equivalent: Inconel 686, Alloy 686, NiCrMoW
Other Names: Alloy 686 welding wire, high-performance nickel alloy filler, corrosion-resistant overlay wire
Chemical reactors and pressure vessels
Flue gas desulfurization (FGD) systems
Seawater piping, pumps, and valves
Marine exhaust and pollution control equipment
Dissimilar metal welding and protective cladding
Heat exchangers in aggressive chemical media
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance (min. 59%) |
| Chromium (Cr) | 19.0 – 23.0 |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Iron (Fe) | ≤ 5.0 |
| Cobalt (Co) | ≤ 2.5 |
| Manganese (Mn) | ≤ 1.0 |
| Carbon (C) | ≤ 0.02 |
| Silicon (Si) | ≤ 0.08 |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 760 MPa |
| Yield Strength | ≥ 400 MPa |
| Elongation | ≥ 30% |
| Operating Temperature | Up to 1000°C |
| Corrosion Resistance | Outstanding |
| Item | Detail |
|---|---|
| Diameter Range | 1.0 mm – 4.0 mm (Typical sizes: 1.2 mm / 2.4 mm / 3.2 mm) |
| Welding Process | TIG (GTAW), MIG (GMAW) |
| Packaging | 5kg / 15kg precision spools or straight-cut rods (1m standard) |
| Surface Condition | Bright, clean, rust-free |
| OEM Services | Labeling, packaging, barcode, and customization available |
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