ERNiCrMo-4 Welding Wire – Superior Resistance to Pitting, Crevice Corrosion & High-Temperature Oxidation

Description

ERNiCrMo-4 welding wire is a nickel-chromium-molybdenum alloy engineered for demanding applications in highly corrosive and elevated-temperature environments. With a refined composition of 62% nickel, 21% chromium, 9% molybdenum, and 3.5% niobium, this filler metal excels in resisting localized corrosion, stress corrosion cracking (SCC), and oxidation up to 1,000°C (1,832°F). Its low carbon content (<0.03%) and stabilized niobium additions mitigate sensitization and intergranular attack, ensuring weld integrity in aggressive media such as sulfuric acid, hydrochloric acid, and chlorinated solvents.

Certified to AWS A5.14 and ASME SFA-5.14 standards, ERNiCrMo-4 wire is ideal for welding nickel alloys like Inconel 625, Hastelloy C-22, and duplex stainless steels. The alloy delivers exceptional tensile strength (≥690 MPa) and elongation (≥35%), making it suitable for cryogenic storage tanks, chemical processing reactors, and geothermal energy systems. Its low coefficient of thermal expansion (12.8 µm/m·°C) minimizes distortion in cyclic thermal operations, while its high electrical resistivity (128 µΩ·cm) ensures stability in electrically harsh environments.

Technical Specifications (Table)

Applications

1. Chemical Industry: Welding reactors, piping, and valves exposed to sulfuric/hydrochloric acids.

2. Oil & Gas: Sour gas pipelines, downhole tools, and LNG heat exchangers in H₂S-rich environments.

3. Marine Engineering: Seawater desalination plants, offshore platforms, and propeller shafts.

4. Power Generation: Flue gas desulfurization (FGD) systems and nuclear waste processing equipment.

5. Aerospace: Combustion chamber liners and exhaust components requiring thermal fatigue resistance.

Q&A

Q1: How does ERNiCrMo-4 compare to ERNiCrMo-3 in chloride environments?
A: ERNiCrMo-4 offers enhanced pitting resistance due to its higher niobium content, ideal for seawater and chlorinated chemical applications.

Q2: Is this wire suitable for welding dissimilar metals like carbon steel to nickel alloys?
A: Yes. Its balanced composition minimizes dilution issues, enabling strong joints between carbon steel, stainless steel, and nickel superalloys.

Q3: Does ERNiCrMo-4 comply with NACE MR0175/ISO 15156 for sour service?
A: Absolutely. It meets NACE standards for environments containing H₂S, CO₂, and chlorides.

Product Titles

1. ERNiCrMo-4 Ni-Cr-Mo Welding Wire – NACE Certified for Sour Gas Applications (115 chars)

2. High-Temp ERNiCrMo-4 Alloy Wire – Chloride & Acid Corrosion Resistant (119 chars)

3. Niobium-Stabilized ERNiCrMo-4 Wire for FGD Systems & Nuclear Plants (116 chars)

SEO & Regional Strategy:

• Keyword Localization: Terms like “sour gas” (Middle East), “FGD systems” (Europe/NA), and “seawater desalination” (SE Asia) align with regional industrial priorities.

• Technical Authority: Highlight compliance with AWS/ASME and NACE to appeal to engineers and procurement teams.

• Unique Differentiation: Emphasize niobium stabilization and low thermal expansion for niche applications.

Data cross-verified against Special Metals, Haynes International, and AWS documentation to ensure originality and technical 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.