Inconel 625 is a high strength nickel-chromium alloy designed to resist corrosion and oxidation. Inconel 625 operates at high temperatures in air and water. The alloy was developed in the 1960s for use as a lining material for steam pipes. Inconel 625 is a trademark currently owned by the Special Metals Corporation.
Inconel 625 is composed of the following metals, by percentage:
- Nickel: 58%
- Chromium: 21.5%
- Molybdenum: 9%
- Iron: 5%
- Niobium & Tantalum: 3.65%
- Plus trace elements of manganese, titanium, silicon, sulphur, carbon, cobalt, silver and phosphorus
Common Industry Applications
The composition of Inconel 625 makes it ideal as a welding material, while its niobium content makes it resistant to extremely harsh environments. The alloy is therefore ideally suited to high performance environments in a number of extreme applications.
- Aerospace manufacturing
- Defence applications
- Underwater pipelines
- Chemical processing
- Ship and submarine motors and propellers
- Oceanographic instruments
- Excellent sea water resistance
- Excellent chloride resistance
- Versatile, strong and easy to weld
No notable disadvantages.
We keep in stock a range of compression fittings for high and low pressure systems, plus Inconel 625 tubing in a variety of lengths.
Alternative Trade Names: Alloy 625, Nickel Alloy 625 and UNS N06625