A nickel-chromium-molybdenum-niobium alloy that is highly resistant to corrosion and is age hardenable for extremely high strength. The strength of this alloy is developed by heat treatment to achieve high ductility and toughness. The alloy is resistant to hydrogen embrittlement and stress-corrosion cracking. Used for hangers, landing nipples, side pocket mandrels and polished bore receptacles in sour gas service. Also used for high-strength fasteners in marine applications.

UNS: N07725
W.Nr.: n/a

Technical Bulletin (PDF, 160KB)

Available Product Forms: round bar and wire

Technical Papers
High Performance Age-Hardenable Nickel Alloys Solve Problems in Sour Oil and gas Service (PDF, 168KB)

Innovative Nickel Alloys for Service in Critical Marine Applications (PDF, 320KB)

Physical Metallurgy of Alloys 718, 725, 725HS, 925 for Service in Aggressive Corrosive Environments (PDF, 1.9MB)

High Strength Corrosion Resistant Superalloy Fasteners, Springs, and Hardware for Marine Service (PDF, 294KB)

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