ERNiCrMo-4 Inconel 686 Welding Wire for High-Temperature Corrosion Resistance

Product Description

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.

Key Features

• 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

Common Names / Designations

• 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

Typical Applications

• 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

Chemical Composition (% Typical)

Mechanical Properties (As-Welded)

Available Specifications

Related Alloys

• ERNiCrMo-3 (Inconel 625)

• ERNiCrMo-10 (C22)

• ERNiMo-3 (Alloy B2)

• ERNiFeCr-2 (Inconel 718)

• ERNiCrCoMo-1 (Inconel 617)

Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.

Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, high-purity magnesium, magnesium plate, magnesium die casting, magnesium extrusion profiles and other metal magnesium and deep processing products.

Thermal spray wire Division offers a wide variety of pure metal and metal alloy wires, including nickel-, iron-, aluminum-, and zinc-based wires for thermal spray projects.

Fuctional Material Division supply electronic packaging COMPONENTS(GTMS, CTMS), soft magnetic alloys and bimetal strip.

Our company is certified by ISO9001 quality system and ISO14001 environmental protection system.

Mission Statement

We try our best to understand and utilize information within the environment. With this competency, we assist customers to create added value and contribute to the development of industry and healthy living.

We strive for "Best, " welcome challenges, and are relentless till we deliver products and solutions.