Inconel 718 Filler Wire – Manufacturer, Supplier & Exporter in Mumbai, India

Inconel 718 Filler Wire – Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of high-quality Inconel 718 Filler Wire in Mumbai, India. We offer premium-grade nickel-based welding filler wires designed to deliver excellent strength, corrosion resistance, and high-temperature stability. Our Inconel 718 filler wires are widely used in industries that require reliable welding materials capable of performing under extreme heat, pressure, and mechanical stress.

Our Inconel 718 filler wires are manufactured using advanced production processes and high-purity nickel-based alloys to ensure precise chemical composition, superior weldability, and consistent welding performance. These filler wires are ideal for welding applications where high strength, creep resistance, and oxidation resistance are essential.

With a strong distribution network and efficient logistics system, Virami Steel Hub supplies Inconel 718 filler wires across India and exports to global markets including the USA, Europe, the Middle East, Africa, and Southeast Asia. Our products comply with international quality standards, ensuring reliable performance and long service life in demanding industrial environments.

What is Inconel 718 Filler Wire?

Inconel 718 Filler Wire, commonly designated as ERNiFeCr-2 or UNS N07718, is a nickel-chromium alloy welding wire known for its exceptional strength, corrosion resistance, and ability to perform in extreme temperature environments. This alloy is precipitation-hardenable, allowing it to achieve very high mechanical strength through heat treatment while maintaining excellent resistance to oxidation and corrosion.

The alloy contains significant amounts of nickel, chromium, iron, niobium, and molybdenum, which together enhance mechanical strength and corrosion resistance. These alloying elements also provide excellent resistance to creep, fatigue, and stress rupture at elevated temperatures.

Inconel 718 filler wire is commonly used for welding Inconel alloys, nickel-based superalloys, stainless steels, and dissimilar metals. It is widely used in industries such as aerospace, oil and gas, power generation, nuclear engineering, and chemical processing.

Due to its exceptional mechanical strength and high-temperature resistance, Inconel 718 filler wire is widely used in welding critical components that operate under extreme conditions.

Key Features of Inconel 718 Filler Wire

Inconel 718 filler wires provide several important advantages that make them suitable for demanding welding applications.

  • Exceptional strength at high temperatures
  • Excellent resistance to oxidation and corrosion
  • Outstanding creep and fatigue resistance
  • Superior weldability with stable arc characteristics
  • High resistance to stress rupture
  • Excellent mechanical performance in extreme environments
  • Good resistance to thermal fatigue
  • Long service life in high-pressure and high-temperature applications

These characteristics make Inconel 718 filler wire a reliable choice for welding components exposed to severe industrial environments.


Chemical Composition of Inconel 718 Filler Wire (%)

The typical chemical composition of Inconel 718 filler wire includes the following elements:

Element Composition (%)
Nickel (Ni) 50 – 55%
Chromium (Cr) 17 – 21%
Iron (Fe) Balance
Niobium + Tantalum (Nb + Ta) 4.75 – 5.50%
Molybdenum (Mo) 2.8 – 3.3%
Titanium (Ti) 0.65 – 1.15%
Aluminum (Al) 0.20 – 0.80%
Carbon (C) 0.08% maximum
Manganese (Mn) 0.35% maximum
Silicon (Si) 0.35% maximum
Phosphorus (P) 0.015% maximum
Sulfur (S) 0.015% maximum

Role of Key Alloying Elements

  • Nickel (Ni) Nickel forms the base of the alloy and provides excellent corrosion resistance and stability at high temperatures.
  • Chromium (Cr) Chromium enhances resistance to oxidation and corrosion by forming a protective oxide layer on the metal surface.
  • Niobium (Nb) Niobium significantly improves the alloy’s strength and creep resistance through precipitation hardening.
  • Molybdenum (Mo) Molybdenum increases resistance to corrosion, especially in harsh chemical environments.
  • Titanium (Ti) and Aluminum (Al) These elements contribute to precipitation hardening, improving mechanical strength and high-temperature performance.

The balanced composition of these alloying elements ensures excellent weld integrity, strength, and corrosion resistance.


Mechanical Properties of Inconel 718 Filler Wire

Inconel 718 filler wires offer outstanding mechanical properties even under extreme service conditions.

  • Tensile Strength: 1000 – 1250 MPa
  • Yield Strength: Minimum 700 MPa
  • Elongation: Approximately 20 – 30%
  • Hardness: Up to 300 HB
  • Density: 8.19 g/cm³

These mechanical properties allow welded joints to maintain exceptional strength and resistance to deformation under high temperatures and mechanical loads.


Physical Properties

Inconel 718 filler wires possess stable physical characteristics that enable them to perform reliably in extreme environments.

  • Melting Range: 1260 – 1336°C
  • Modulus of Elasticity: 205 GPa
  • Thermal Conductivity: 11.4 W/m·K
  • Electrical Resistivity: 1.29 µΩ·m
  • Coefficient of Thermal Expansion: 13.0 µm/m°C

These properties contribute to excellent thermal stability and resistance to thermal fatigue.


Corrosion Resistance

Inconel 718 filler wire offers excellent resistance to corrosion and oxidation in a wide range of environments.

It provides strong resistance to:

  • Oxidizing and reducing environments
  • High-temperature oxidation
  • Chemical corrosion
  • Chloride stress corrosion cracking
  • High-pressure steam environments
  • Industrial furnace atmospheres

Due to these characteristics, Inconel 718 filler wire is widely used in industries such as aerospace, oil and gas, power generation, and nuclear engineering.


Heat Treatment

Inconel 718 is a precipitation-hardenable alloy that can be heat treated to achieve exceptional mechanical strength.

Solution Annealing

  • Temperature Range: 940 – 980°C
  • Rapid cooling to maintain corrosion resistance

Precipitation Hardening

  • Aging treatment at controlled temperatures to increase strength and creep resistance

These heat treatment processes enhance the alloy's strength, fatigue resistance, and high-temperature stability.


Weldability

Inconel 718 filler wire offers excellent weldability and is compatible with several welding processes.

Common welding methods include:

  • TIG Welding (GTAW)
  • MIG Welding (GMAW)
  • Submerged Arc Welding (SAW)
  • Shielded Metal Arc Welding (SMAW)

Welding Recommendations

  • Clean welding surfaces thoroughly before welding
  • Use proper shielding gases
  • Maintain controlled heat input
  • Avoid contamination from carbon steel

These practices help produce strong, defect-free weld joints.


Machinability

Inconel 718 has moderate machinability due to its high strength and work-hardening characteristics.

Recommended machining practices include:

  • Use high-quality carbide cutting tools
  • Maintain lower cutting speeds
  • Use sufficient coolant during machining
  • Avoid excessive heat buildup

These practices help improve machining efficiency and surface finish.


Standards & Specifications

Virami Steel Hub supplies Inconel 718 filler wires according to internationally recognized standards.

  • AWS A5.14 ERNiFeCr-2
  • ASTM B637
  • ASME SFA 5.14
  • UNS N07718

Available Sizes

  • Wire Diameter: 0.8 mm to 5 mm
  • Coil Weight: 1 kg to 500 kg
  • Available in spools, coils, or cut lengths

Surface Finish

  • Bright finish
  • Polished finish
  • Clean welding-grade surface

Custom sizes and packaging options are available based on specific industrial requirements.


Applications of Inconel 718 Filler Wire

Inconel 718 filler wire is widely used across industries that require materials capable of withstanding high temperatures and mechanical stress.

Aerospace Industry

  • Aircraft engine components
  • Turbine blades
  • Jet engine exhaust systems

Oil and Gas Industry

  • Downhole tools
  • Subsea equipment
  • High-pressure valves

Power Generation Industry

  • Gas turbine components
  • Nuclear reactor equipment

Chemical Processing Industry

  • Heat exchangers
  • High-temperature processing equipment

Marine Industry

  • Offshore structures
  • Seawater piping systems

These applications demonstrate the reliability and durability of Inconel 718 filler wire in critical industrial environments.


Quality Testing & Inspection

At Virami Steel Hub, every batch of Inconel 718 filler wire undergoes strict quality inspection to ensure compliance with international standards.

Quality checks include:

  • Chemical composition testing
  • Mechanical and tensile testing
  • Surface quality inspection
  • Dimensional accuracy checks
  • Positive Material Identification (PMI)

We provide Mill Test Certificates (MTC) according to ASTM and AWS standards, and third-party inspection services are available upon request.


Packaging & Delivery

Virami Steel Hub ensures secure packaging and reliable delivery for all orders.

  • Moisture-proof protective packaging
  • Supplied in spools, coils, or straight lengths
  • Export-grade wooden boxes or pallets
  • Proper labeling and product traceability

Our logistics network ensures safe transportation and timely delivery across domestic and international markets.


Why Choose Virami Steel Hub?

  • Leading Inconel 718 filler wire manufacturer in Mumbai
  • Large ready stock availability
  • Competitive industrial pricing
  • Custom manufacturing and packaging options
  • Compliance with international quality standards
  • Global export network
  • Reliable delivery and strong customer support

Conclusion

Inconel 718 Filler Wire is a high-performance nickel-based welding material known for its exceptional strength, corrosion resistance, and ability to perform in extreme temperature environments. It is widely used for welding nickel-based alloys and critical components in industries such as aerospace, oil and gas, power generation, chemical processing, and marine engineering.

Virami Steel Hub supplies premium-quality Inconel 718 filler wires manufactured according to international standards, ensuring excellent welding performance, durability, and long service life in demanding industrial applications.

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