Alloy 625 (UNS N06625) is an austenitic nickel base superalloy possessing excellent resistance to oxidation and corrosion over a broad range of corrosive conditions, including jet engine environments and many other aerospace and chemical process applications. The alloy has outstanding strength and toughness at temperatures ranging from cryogenic temperature to 2000F (1093C). Alloy 625 also has exceptional fatigue resistance.
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Specs: 625 (UNS N06625)
Nickel-Base Superalloy
Inconel 625 (UNS N06625) is an austenitic nickel base superalloy possessing excellent resistance to oxidation and corrosion over a broad range of corrosive conditions, including jet engine environments and many other aerospace and chemical process applications. The alloy has outstanding strength and toughness at temperatures ranging from cryogenic temperature to 2000F (1093C). Alloy 625 also has exceptional fatigue resistance.
Alloy 625 derives its strength from the solid solution strengthening effects of molybdenum and columbium on the nickel-chromium matrix. These elements also contribute to the alloy’s outstanding corrosion resistance. Although the alloy was developed for high temperature strength, its highly alloyed composition provides a high level of general corrosion resistance to a wide range of oxidizing and nonoxidizing environments. The levels of chromium and molybdenum provide excellent resistance to chloride ion pitting, and the high level of nickel provides resistance to chloride stress corrosion cracking.
The material possesses a high degree of formability and shows better weldability than many highly alloyed nickel-base alloys. The alloy is resistant to intergranular corrosion even in the welded condition.
Alloy 625 can be produced by vacuum induction melting or AOD refining. Consumable electrode remelting procedures may be used to further refine the material.
Product Forms
- Sheet
- Plate
- Bar
- Pipe & Tube (welded & seamless)
- Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
- Wire
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Applications
Seawater applications
Aerospace components
Chemical processing equipment
Nuclear water reaction components
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Standards
ASTM..........B 443
ASTM..........B 444
ASTM..........B 446
ASTM..........B 704
ASTM..........B 705
Hot words: Hastelloy C276, Hastelloy B, Hastelloy B2, Hastelloy B3, Hastelloy C4, Hastelloy C22, Inconel 625, Inconel 600, Inconel 601, Inconel 718, Inconel X750.
