Properties and Common Applications of Inconel 625 Sheet

Posted by , on Jul, 2014

Inconel 625 is a non-magnetic, nickel-based super alloy that is resistant to corrosion and oxidation in many different environments. It is commonly used in jet engines, but has many other aerospace and chemical process applications, including:

  • Furnace hardware

  • Heat shields

  • Combustion liners

  • Gas turbine engine ducting

  • Marine engineering

  • Pollution control

  • Chemical and petrochemical processing equipment

  • Oil and gas extraction

  • Aerospace exhaust and ducting systems

It also has nuclear applications, and can be used for reactor core and control rod components in nuclear water reactors.

Superior Strength

The alloy is incredibly strong and tough, thanks to the stiffening effects of the refractory metals molybdenum and columbium, which, together with niobium and tantalum, work to strengthen the solid solution effects on the nickel-chromium matrix. Its superior strength means it saves weight and improves heat transfer in a number of applications.

Inconel alloy 625 sheet is easy to make, and is produced by vacuum induction melting or by AOD refining. Consumable electrode re-melting procedures can later be used to refine the material even further.

Corrosion Resistant

Inconel 625 offers excellent resistance to chloride ion pitting and chloride stress corrosion, making it highly desirable in a variety of seawater, brine, neutral salt and other corrosive environments. Applications in these environments include:

  • Propeller blades

  • Submarine auxiliary propulsion motors

  • Wire rope for mooring cables

  • Submarine transducer controls

  • Sheathing for undersea communication cables

  • Steam-line bellows

It also offers good resistance to mineral acids, such as nitric, phosphoric, sulfuric and hydrochloric acids.

High Temperature Tolerance

Inconel 625 performs equally well in temperatures ranging from cryogenic to 2000 degrees Fahrenheit, and is exceptionally resistant to fatigue. It is highly formable, and more easily weldable than many other nickel alloys. Even it its welded condition it retains its high level of resistance to inter-granular corrosion.

 Many Available Forms

Inconel 625 is most commonly available in Inconel 625 Sheet, Inconel 625 Bar and Inconel 625 Seamless pipe. Other forms include welded pipe, welded tube, wire, plate, forgings and flanges.

 Inconel 625 sheet is available in differing thicknesses, ranging from between .010 to .156”. It can be hardened by cold working, and is generally supplied in the hardened condition specified.

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Posted by , on Jul, 2014

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