Dynamic Fabrication is familiar with exotic materials and has experience welding inconel. We are familiar with inconnel welding and fabrication techniques. Inconel alloys are oxidation and corrosion resistant materials well suited for service in extreme environments subjected to pressure and heat. Here is a link to an excellent article explaining the characteristics and applications of inconel.

Inconel Welding Overview

The registered trademark name, Inconel, is applied as the prefix name to more than twenty different highly corrosion resistant high temperature strength metal alloys produced by Special Metals Corporation. These Inconel alloys or superalloys are nickel-based, exhibit traits such as high resistance to corrosion, oxidation, carburization, pitting, crevice, corrosion cracking, and high temperature strength. Often, Inconel is referred to as “Inco”.

inconel welding a manifold

Alloys of identical chemical and mechanical properties are available from other manufacturers and offer excellent alternatives to the various Inconel® brand alloys.

The corrosion resistant superalloys are widely used in extreme environments where tremendous heat and corrosion resistance is paramount to the integrity of the end product. Inconnel welding is commonly used in the chemical processing, nuclear, petrochemical, aerospace and marine industries.

Characteristics of Inconel Welding

When welding an Inconel alloy use Inconel filler metal. This is typically the easiest Inconel alloy to weld and is effective when two Inconel pieces need to be welded together. You can also use Inconel 625 to weld other metals that are dissimilar in composition, such as stainless steel. When using Inconel to weld it is common for the weld pool to be poorly defined. Inconel fillers tend to leave a skin like film on the surface of the weld pool and is dirty in appearance. If this occurs there is no need for alarm as this is a common side effect of Inconel welding. Inconel produces strong welds which are highly resistant to corrosion.

  • Good resistance to acids, such as sulfuric, phosphoric, nitric, and hydrochloric
  • Almost completely free from chloride induced stress corrosion cracking
  • Excellent mechanical properties at both extremely low and extremely high temperatures
  • Outstanding resistance to pitting, crevice corrosion and intercrystalline corrosion
  • High resistance to oxidation at elevated temperatures

Applications for Inconel Alloys

  • Chemical and petrochemical processing
  • Components where exposure to high mechanical stress and sea water are required
  • Flare stacks on offshore oil platforms
  • Gas turbines, rocket motors/engines, and space craft
  • Pollution control equipment
  • Nuclear reactors

Superalloys such as Inconel high performance alloys have become the steel of choice for corrosion resistance and versatility. Be sure to contact us for all your Inconel welding needs.

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