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ERNiCrMo-3 (UNS N06625) / NI625 Wire / Alloy 625 Welding Wire / AWS A5.14 / Inconel 625 Filling Wire / Inconel 625 Welding Wire



ERNiCrMo-3 is a nickel-chromium-molybdenum filler metal used for MIG, TIG, submerged arc and plasma arc welding of Inconel alloys 601, 625 and 690 as well as Incoloy alloys 800, 825 and 800HT to themselves or to each other.  Filler Metal Alloy 625 is excellent for joining these Inconel and Incoloy alloys to dissimilar metals such as carbon steel, low alloy steel, ferritic and austenitic stainless steels. This filler metal produces weld deposits with excel lent corrosion and oxidation resistance against phosphoric acids, organic acids and seawater. Good resistance against pitting and stress corrosion cracking in chloride containing environments. The weld deposits exhibit high strength and fatigue resistance over a broad range of temperatures ranging from cryogenic up to 1800°F.

Product Detail

Alloy 625 welding wire stands as a premium-grade, corrosion-resistant material engineered for welding applications across various industries. Renowned for its exceptional properties, this nickel-based alloy welding wire offers unparalleled strength, superb corrosion resistance, and superb weldability, making it an invaluable choice for critical welding operations.

Composition and Properties

Alloy 625 welding wire primarily consists of nickel, chromium, molybdenum, and niobium, along with smaller proportions of other alloying elements. This alloy composition provides an optimal balance of mechanical strength, corrosion resistance, and thermal stability.

Corrosion Resistance

One of the most distinguished characteristics of Alloy 625 welding wire is its remarkable resistance to corrosion and oxidation, especially in aggressive environments such as seawater, chemical processing, and high-temperature applications. This attribute makes it an ideal choice for welding components exposed to corrosive elements.

High-Temperature Stability

Alloy 625 exhibits exceptional stability and strength at elevated temperatures, retaining its mechanical properties even under extreme heat conditions. This feature makes it a preferred material for welding in industries requiring components to endure high temperatures without compromising performance.

Mechanical Strength and Versatility

The welding wire made of Alloy 625 showcases outstanding mechanical properties, including high tensile strength, excellent fatigue resistance, and superior weldability. Its versatility allows for welding a wide range of materials, including stainless steels, carbon steels, and other nickel alloys.


Alloy 625 welding wire finds extensive use across various industries due to its exceptional properties:

  1. Aerospace: It is employed in aerospace applications for welding components in aircraft engines, exhaust systems, and structural elements requiring high-temperature stability and corrosion resistance.

  2. Chemical Processing: Alloy 625 is used for welding parts in chemical processing equipment, pipelines, and reactors subjected to harsh chemical environments.

  3. Marine Industry: It is utilized for welding marine components, valves, and fittings where resistance to seawater corrosion is crucial.

  4. Oil and Gas: In the oil and gas industry, Alloy 625 welding wire is used for welding downhole equipment, pipelines, and valves exposed to high-pressure and corrosive conditions.

Advantages of Alloy 625 Welding Wire

  • Superior Corrosion Resistance: Its exceptional resistance to corrosion and oxidation makes it suitable for harsh environments.

  • High-Temperature Stability: Alloy 625 retains its strength and properties at elevated temperatures, making it ideal for high-heat applications.

  • Versatility and Weldability: Its versatility allows for welding various materials while maintaining excellent weldability and reliability.


Ni625 wire, manufactured from the nickel-based superalloy Inconel 625, stands as a testament to the remarkable capabilities of advanced materials in modern industries. With its exceptional corrosion resistance, high-temperature performance, and strength, Ni625 wire has become a go-to solution for critical applications in aerospace, chemical processing, marine, and oil and gas sectors. This article delves into the properties, composition, and diverse applications of Ni625 wire, highlighting its significance in challenging environments. From its composition to its weldability and corrosion resistance, Ni625 wire remains a reliable choice for industries seeking optimal performance, longevity, and reliability in the face of extreme conditions.

Composition and Properties:

Ni625 wire consists primarily of approximately 60% nickel, accompanied by significant amounts of chromium, molybdenum, and niobium. This unique alloy composition imparts exceptional resistance to corrosion, making Ni625 wire highly sought after in environments where exposure to corrosive substances is expected. Its resistance extends to both oxidizing and reducing environments, ensuring prolonged durability and longevity.

One of the key strengths of Ni625 wire lies in its high-temperature performance. It retains its mechanical properties and strength even at elevated temperatures, enabling it to withstand temperatures of up to 1,000°C (1,832°F) without significant degradation. This attribute makes Ni625 wire an ideal choice for applications such as gas turbines and heat exchangers, where resistance to extreme temperatures is critical.

In terms of mechanical properties, Ni625 wire exhibits high tensile strength and good fatigue strength, allowing it to withstand heavy loads and cyclic loading conditions. Its excellent thermal stability further enhances its suitability for demanding applications that require strength and reliability.

Weldability is another noteworthy characteristic of Ni625 wire. It can be easily joined using various welding techniques, including gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW). Care must be taken to follow proper welding procedures to maintain the corrosion resistance and mechanical properties of the alloy during the welding process.


Ni625 wire finds extensive applications across multiple industries where its exceptional properties are harnessed for optimal performance. Here are some key sectors where Ni625 wire excels:

  1. Aerospace Industry:
    Ni625 wire plays a vital role in the aerospace sector, particularly in aircraft engine components, exhaust systems, and combustion chambers. Its high-temperature performance, corrosion resistance, and strength make it an ideal choice for these critical applications. Ni625 wire helps ensure reliable operation and enhanced efficiency in the demanding aerospace environment.

  2. Chemical Processing:
    In chemical processing plants, Ni625 wire is widely used due to its resistance to aggressive chemical environments. It withstands harsh conditions, including exposure to sulfuric acid, hydrochloric acid, and other corrosive substances. Ni625 wire finds applications in pipelines, valves, heat exchangers, and other components that require exceptional corrosion resistance and durability.

  3. Oil and Gas Industry:
    The oil and gas industry demands materials that can withstand the extreme conditions encountered during exploration, production, and refining processes. Ni625 wire is extensively employed in pipelines, valves, wellhead components, and downhole tools. Its resistance to corrosive environments, including seawater, sour gas, and high-pressure/high-temperature conditions, ensures reliable performance and prolonged service life.

  4. Marine and Offshore Applications:
    Ni625 wire’s resistance to pitting, crevice corrosion, and stress corrosion cracking makes it highly valuable in marine and offshore settings. It is utilized in propeller shafts, fasteners, seawater cooling systems, and other critical components where exposure to saline environments is prevalent. Ni625 wire’s longevity and reliability help mitigate the effects of corrosive seawater, ensuring operational efficiency and safety.

Ni625 wire, derived from the nickel-based superalloy Inconel 625, stands as a versatile and reliable material for a wide range of demanding applications. Its exceptional corrosion resistance, high-temperature performance, and mechanical strength make it an invaluable choice for industries requiring optimal performance in extreme environments. From aerospace to chemical processing, oil and gas to marine applications, Ni625 wire continues to unleash the power of advanced materials, ensuring longevity, reliability, and efficiency in critical sectors. As industries advance and face new challenges, Ni625 wire will continue to play a pivotal role in meeting and exceeding expectations, driving innovation, and providing solutions that withstand the test of time.

C P S Mn Fe Si Ni+Co Al Ti Cr Nb+Ta Mo Cu Others
≤0.1 ≤0.02 ≤0.015 ≤0.5 ≤3.0 ≤0.5 ≥58 ≤0.4 ≤0.4 20-23 3.15-4.15 8.0-10.0 ≤0.50 ≤0.5
Condition Tensile strength Mpa (Ksi) Yield strength Mpa (Ksi) Elongation %
AWS Reaulrement 760 (110) Not specified Not specified
Typical Results as weled 790 (115) 590 (85) 35.0
Diameter(in) Diameter(mm) Process Volt Amps (flat) Amps (V/OH)
0.035 0.9 GMAW 26-29 150-190 Spray Transfer 100% Argon
0.045 1.2 GMAW 28-32 180-220 Spray Transfer 100% Argon
1/16 1.6 GMAW 29-33 200-250 Spray Transfer 100% Argon
1/16 1.6 GTAW 14-18 90-130 100% Argon
3/32 2.4 GTAW 15-20 120-175 100% Argon
1/8 3.2 GTAW 15-20 150-220 100% Argon
3/32 2.4 SAW 32-35 240-290 Suitable Flux
1/8 3.2 SAW 32-35 300-350 Suitable Flux
Product Diameter Length, Packaging
Wire For MIG/GMAW Welding 0.8mm /1.0mm /1.2mm /1.6mm /2.0mm /2.4mm /2.5mm /3.2mm - 33 lbs (15kgs)
Rods For TIG/GTAW Welding 2.0mm /2.4mm /2.5mm /3.2mm /4.0mm /5.0mm 915mm- 1000mm 11 lbs (5kgs)
Wire For SAW Welding 2.0mm /2.4mm /2.5mm /3.2mm /4.0mm /5.0mm - 60 lbs (27kgs)

ErNiCrMo3 is a type of welding wire that is commonly used for welding nickel-chromium-molybdenum alloys, particularly in applications involving high-temperature and corrosive environments. It is a solid wire electrode with a nominal composition of nickel (Ni), chromium (Cr), and molybdenum (Mo).

ErNiCrMo3 wire is primarily used for joining and overlaying nickel-chromium-molybdenum alloys such as Hastelloy® C-276, Inconel® 625, and similar alloys. These alloys are known for their excellent resistance to corrosion, high-temperature strength, and ability to withstand harsh environments, making them suitable for applications in the chemical processing, petrochemical, and oil and gas industries.

The primary features and characteristics of ErNiCrMo3 wire include:

  • Corrosion Resistance: ErNiCrMo3 wire provides excellent resistance to corrosion, including resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in highly corrosive environments.
  • High-Temperature Strength: The wire exhibits good strength and mechanical properties at elevated temperatures, making it suitable for applications where the welded joints need to withstand high-temperature environments.
  • Weldability: ErNiCrMo3 wire offers good weldability and can produce high-quality welds with sound mechanical properties, ensuring reliable and strong joints.
  • Versatility: The wire is suitable for various welding processes, including gas tungsten arc welding (GTAW or TIG), gas metal arc welding (GMAW or MIG), and submerged arc welding (SAW). It can be used for both joining and overlaying applications.
  • Chemical Composition: ErNiCrMo3 wire typically contains approximately 67-71% nickel, 20-23% chromium, 7-9% molybdenum, with small amounts of other elements such as iron (Fe) and tungsten (W).

ErNiCrMo3 wire is a high-performance welding wire renowned for its exceptional corrosion resistance and mechanical properties. This nickel-based alloy is primarily used for welding nickel-chromium-molybdenum (Ni-Cr-Mo) alloys, including Inconel® 625 and Incoloy® 825. Its unique composition makes it a preferred choice for critical applications in various industries, ranging from aerospace and petrochemical to marine and nuclear.

Chemical Composition and Properties

ErNiCrMo3 wire consists of a precise combination of nickel, chromium, molybdenum, and a small amount of niobium. The typical chemical composition is as follows:

  • Nickel (Ni): 58.0 – 62.0%
  • Chromium (Cr): 20.0 – 23.0%
  • Molybdenum (Mo): 8.0 – 10.0%
  • Iron (Fe): 5.0% max
  • Niobium (Nb): 3.15 – 4.15%
  • Other elements: Carbon (C), Silicon (Si), Phosphorus (P), Sulfur (S)

The combination of these elements imparts outstanding resistance to a wide range of corrosive environments, such as seawater, acids, alkalis, and oxidizing and reducing media. Additionally, ErNiCrMo-3 exhibits excellent mechanical properties, including high tensile strength, good ductility, and impressive creep resistance at elevated temperatures.


ErNiCrMo3 wire finds applications in various industries where exceptional corrosion resistance and mechanical strength are required:

  1. Aerospace Industry: In aerospace applications, where components are exposed to extreme conditions, such as high temperatures and aggressive environments, ErNiCrMo3 wire is used for welding critical parts like aircraft engine components, exhaust systems, and turbine blades.
  2. Petrochemical Industry: In the petrochemical sector, where resistance to harsh chemicals is paramount, ErNiCrMo-3 is employed for welding pipelines, heat exchangers, and reactors handling corrosive fluids.
  3. Marine Industry: The marine environment is highly corrosive due to exposure to saltwater. ErNiCrMo-3 is used for welding marine components like propellers, shafts, and valves to ensure longevity and performance in such conditions.
  4. Nuclear Industry: ErNiCrMo-3 welding wire is utilized in the nuclear industry for welding reactor vessels and components, where corrosion resistance and mechanical integrity are critical for safety and reliability.
  5. Offshore Industry: Offshore structures face aggressive seawater conditions and harsh weather elements. ErNiCrMo-3 is chosen for welding offshore platforms, risers, and subsea components to ensure their long-term performance.

Welding Techniques

ErNiCrMo3 wire can be used with various welding processes, including Gas Tungsten Arc Welding (GTAW/TIG) and Gas Metal Arc Welding (GMAW/MIG). Proper welding techniques, such as pre-heating, interpass temperature control, and post-weld heat treatment, are essential to achieve high-quality, defect-free welds and preserve the alloy’s mechanical properties.

Advantages of ernicrmo3 wire


ErNiCrMo-3 wire, which is a nickel-chromium-molybdenum alloy welding wire, offers several advantages that make it a preferred choice for various welding applications, particularly in industries where corrosion resistance, high-temperature performance, and reliability are crucial. Here are some key advantages of ErNiCrMo-3 wire:

  1. Excellent Corrosion Resistance: ErNiCrMo-3 wire is highly resistant to corrosion, even in aggressive environments containing corrosive chemicals, acids, and saltwater. This property makes it ideal for applications in the chemical processing, petrochemical, and offshore industries where exposure to corrosive substances is common.

  2. High-Temperature Performance: One of the standout features of ErNiCrMo-3 is its ability to maintain its structural integrity and corrosion resistance at elevated temperatures. It can withstand extreme heat without significant degradation, making it suitable for applications in power generation, aerospace, and high-temperature processing.

  3. Versatility: ErNiCrMo-3 wire is versatile and compatible with various welding processes, including gas tungsten arc welding (GTAW or TIG) and gas metal arc welding (GMAW or MIG). This versatility allows for its use in a wide range of applications and industries.

  4. Wide Range of Applications: This welding wire is commonly used for joining and repairing components made of nickel-based alloys, such as Inconel and Hastelloy. These alloys are widely employed in critical applications across industries, including aerospace, chemical, and oil and gas.

  5. Good Weldability: ErNiCrMo-3 is known for its excellent weldability. It produces high-quality welds when proper welding techniques and parameters are employed. Welders find it relatively easy to work with, leading to consistent and reliable results.

  6. AWS Certification: The wire conforms to the American Welding Society (AWS) A5.14/A5.14M specification. This certification ensures that ErNiCrMo-3 welding wire meets specific quality and performance standards, making it a trusted choice for critical applications.

  7. Longevity and Reliability: Components and structures welded with ErNiCrMo-3 wire exhibit longevity and reliability due to the wire’s corrosion resistance and high-temperature stability. This is particularly important in industries where equipment must endure harsh conditions over an extended period.

  8. Wide Range of Available Forms: ErNiCrMo-3 wire is available in various forms, including solid wire and flux-cored wire, to accommodate different welding processes and preferences.

  9. Compliance with Industry Standards: In industries such as aerospace and nuclear, where stringent standards and certifications are mandatory, ErNiCrMo-3 welding wire is available in variants that meet these specific requirements. This ensures compliance with industry regulations and safety standards.

  10. Cost-Effective Solution: Despite its many advantages, ErNiCrMo-3 wire can be a cost-effective solution for applications where the benefits of corrosion resistance and high-temperature performance outweigh the initial material cost.

In summary, ErNiCrMo-3 wire offers a combination of exceptional corrosion resistance, high-temperature performance, versatility, and reliability, making it a preferred choice for a wide range of critical welding applications across various industries. Its ability to withstand harsh environments and provide long-term durability contributes to its continued popularity in demanding applications.

ErNiCrMo3 wire is an alloy of choice for critical applications that demand exceptional corrosion resistance and mechanical strength. Its impressive properties make it suitable for diverse industries, including aerospace, petrochemical, marine, nuclear, and offshore.
When working with ErNiCrMo3 wire, it is crucial to follow proper welding procedures and techniques to ensure the integrity of the welds and maximize the performance of the alloy. As technology and engineering continue to advance, ErNiCrMo-3 will undoubtedly remain a fundamental material for high-performance welding applications, contributing to the reliability and durability of various industrial components.