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

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

Name: ErNiFeCr2 SNi7718 Inconel 718 welding wire HighStrength MIGTIG Filler Metal for HeatResistant Applications
Brand: HUONA
Price: 1 USD

Brand Name : HUONA

Model Number : WIRE

Certification : ISO9001

Place of Origin : CHINA

MOQ : 15kg

Price : Bargain

Payment Terms : T/T

Supply Ability : 1000ton /year

Delivery Time : a week

Packaging Details : Case

Diameter Range : 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm, 2.4 mm, 3.2 mm (custom sizes available)

Welding Methods : MIG (GMAW), TIG (GTAW)

Form : Spool, Coil, Straight Rod

Packaging : 5kg/10kg/15kg Spools or 5kg Rod Packs

OEM Service : Available (labels, logos, etc.)

Tensile Strength : ≥1240 MPa

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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).

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

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)

Element	Content (%)
Nickel (Ni)	50.0 – 55.0
Chromium (Cr)	17.0 – 21.0
Iron (Fe)	17.0 – 21.0
Niobium (Nb+Ta)	4.75 – 5.50
Molybdenum (Mo)	2.80 – 3.30
Titanium (Ti)	0.65 – 1.15
Aluminum (Al)	0.20 – 0.80
C, Mn, Si, S	Trace (≤0.10%)

Mechanical Properties (Post Heat Treatment)

Property	Value
Tensile Strength	≥1240 MPa
Yield Strength	≥1035 MPa
Elongation	≥12%
Hardness	~331 HB
Operating Temp	–253°C to 700°C

Available Specifications

Item	Detail
Diameter Range	0.8 mm – 3.2 mm
Welding Methods	MIG (GMAW), TIG (GTAW)
Form	Spool, Coil, Straight Rod
Packaging	5kg/10kg/15kg Spools or 5kg Rod Packs
OEM Service	Available (labels, logos, etc.)

Note

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

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