ErNiFeCr-2 SNi7718 / Inconel 718 welding wire – High-Strength MIG/TIG Filler Metal for Heat-Resistant Applications

Product Description

ErNiFeCr-2 (AWS A5.14 classification) is a solid nickel-based filler metal specifically designed for welding Inconel 718, Inconel X-750, and similar precipitation-hardened high-strength alloys. It offers excellent weldability and mechanical properties, even in extreme temperature environments, making it ideal for aerospace, gas turbine, cryogenic, and high-pressure applications.

Also referred to as SNi7718 in Chinese standards, this alloy delivers exceptional strength, oxidation resistance, and stress rupture performance after post-weld heat treatment (PWHT).

Common Names / Designations

• AWS Specification: ErNiFeCr-2

• UNS Number: N07718

• Chinese Code: SNi7718

• Trade Names: Inconel® 718 Welding Wire, Alloy 718 Wire

• Other Names: Nickel 718 TIG Wire, Nickel 718 MIG Wire, NiFeCr Alloy Wire

Key Features

• Designed for welding precipitation-hardened nickel alloys like Inconel 718 and X-750

• Excellent high-temperature strength and corrosion resistance

• Good weldability and crack resistance

• Maintains integrity in cryogenic to elevated temperature ranges (–253°C to +700°C)

• Suitable for PWHT (Aging/Heat Treatment)

• Used in MIG (GMAW) and TIG (GTAW) processes

Typical Applications

• Aerospace engines and turbine blades

• Nuclear and gas power plants

• High-pressure vessels and piping

• Cryogenic equipment

• Oil & gas components

• Jet engine parts and fasteners

Chemical Composition (% Typical)

Mechanical Properties (Post Heat Treatment)

Available Specifications

Note

We provide full traceability, mill test certificates (MTC), and export packaging. Custom solutions for aerospace and critical-use customers available on request.

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.