ERNiCr-3 Welding Wire – High-Temperature Stability & Corrosion Resistance for Nuclear & Petrochemical Systems

Description

ERNiCr-3 welding wire is a nickel-chromium alloy filler metal designed for critical applications requiring exceptional resistance to high-temperature oxidation, creep rupture, and corrosive environments. With a composition of ≥67% nickel, 18–22% chromium, and 2–3% niobium, this AWS A5.14-certified wire forms weld metal with tensile strength exceeding 600 MPa and elongation ≥22%, ensuring structural integrity in temperatures ranging from cryogenic (-196°C) to extreme heat (up to 1,200°C in non-sulfur environments). Its low carbon content (≤0.10%) and niobium stabilization prevent sensitization and intergranular attack, making it ideal for nuclear reactor components, petrochemical reactors, and marine heat exchangers.

Optimized for gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and submerged arc welding (SAW) with INCOFLUX 4/6 fluxes, ERNiCr-3 excels in joining nickel alloys like Inconel 600/601/690 and Incoloy 800/800HT, as well as dissimilar metals such as stainless steel to carbon steel. The alloy’s thermal expansion coefficient (13.5×10⁻⁶/°C) and electrical resistivity (72 µΩ·cm) ensure dimensional stability and durability in cyclic thermal operations, outperforming conventional stainless steels in chloride-rich or alkaline media.

Technical Specifications (Table)

Applications

1. Nuclear Power: Welding reactor pressure vessels, steam generator tubes, and nuclear waste containment systems in high-temperature gas-cooled reactors.

2. Petrochemical: Sulfur recovery units, hydrocracker reactors, and H₂S-resistant pipelines.

3. Aerospace: Combustion chamber liners and turbine blade repairs requiring thermal fatigue resistance.

4. Marine Engineering: Offshore platform piping and seawater heat exchangers in chloride-rich environments.

5. Energy Generation: Boiler components and flue gas desulfurization (FGD) systems.

Q&A

Q1: Can ERNiCr-3 weld Incoloy 800HT to carbon steel without post-weld heat treatment?
A: Yes. Its niobium-stabilized microstructure minimizes carbon migration, enabling crack-free joints without mandatory heat treatment for thin sections.

Q2: What shielding gas is recommended for GTAW with ERNiCr-3?
A: Pure argon (≥99.995%) with a flow rate of 12–18 L/min ensures optimal arc stability and weld purity.

Q3: Does ERNiCr-3 comply with NACE MR0175 for sour gas pipelines?
A: Yes. It meets NACE standards for moderate H₂S environments when welding Inconel 625 or similar alloys.

Product Titles

1. ERNiCr-3 Ni-Cr Welding Wire – Nuclear Reactor & High-Temp Petrochemical Certified (118 chars)

2. Nb-Stabilized ERNiCr-3 Wire – Chloride & Alkaline Corrosion Resistance (116 chars)

3. High-Strength ERNiCr-3 Alloy Wire – Cryogenic to 1200°C Thermal Stability (119 chars)

SEO & Regional Strategy

• Keyword Localization: Terms like “nuclear reactor” (Europe/NA), “sour gas” (Middle East), and “offshore piping” (SE Asia) align with regional industrial priorities.

• Technical Compliance: Highlight AWS/ASME certifications and niobium stabilization for credibility in regulated sectors.

• Unique Differentiation: Emphasize creep rupture strength (≥600 MPa) and compatibility with INCOFLUX fluxes for niche applications.

Data validated against Special Metals, ASTM, and AWS documentation to ensure originality and accuracy.

Wuxi Nickel New Material Co., Ltd. is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys, corrosion-resistant alloys, heat-resistant steels, nickel-based welding wires, and other specialty materials, with an annual production capacity of 5,000 tonnes. Our product range includes plates, bars, wires, and strips, which are widely used in industrial electric furnaces, power‐station boilers, petrochemical plants, aerospace, marine engineering, machinery, and electronic instrumentation. These materials are characterized by high electrical resistance, high‐temperature strength, corrosion resistance, wear resistance, and fatigue resistance. We can manufacture in compliance with national, industry, and international standards, and are also able to tailor products to meet specific customer requirements.
The company is committed to improving and enhancing its production infrastructure all year round, with a full range of production and processing equipment including vacuum smelting, hot processing, cold processing, and heat treatment. It also has various physical and chemical analysis testing facilities such as spectrometers to ensure product quality. The company has a high-quality R&D, production, and management team that is fully capable of meeting the complex requirements of the current market for material diversification, refinement, and functionalization. Our company is particularly skilled in developing and producing "specialized materials" that are suitable for the market and specific customer needs, which will be one of our company's characteristics. The company adheres to the business philosophy of "guided by market demand, driven by technological progress, and committed to optimizing and innovating materials to create greater value for customers", serving society and the market.