General Technical Characteristics
Nickel alloy Inconel Alloy 725 (UNS N07725) is a high-strength, corrosion-resistant material based on nickel and strengthened by precipitation hardening. The alloy is designed for operation under high loads and in aggressive environments, including seawater, acids, and media with a high chloride content.
Due to the high content of nickel, chromium, and molybdenum, Inconel 725 demonstrates excellent resistance to corrosion, pitting and crevice corrosion, as well as resistance to stress corrosion cracking. The material combines high mechanical strength with outstanding corrosion resistance, making it widely used in the oil and gas, chemical, and marine industries.
The alloy Inconel Alloy 725 / UNS N07725 is widely used for manufacturing components that operate under high pressure and in aggressive service environments.
Applications
Nickel alloy Inconel 725 is used in various high-technology industrial sectors:
- oil and gas industry (drilling and production equipment)
- marine and offshore engineering
- manufacturing of pumps and valves
- high-pressure pipeline fittings
- chemical and petrochemical equipment
- fasteners for aggressive environments
- components for drilling rigs and subsea equipment
Due to its high reliability, UNS N07725 is used for producing critical structural components.
Features and Advantages
Key advantages of Inconel Alloy 725:
- high strength and resistance to mechanical loads
- excellent corrosion resistance in seawater and aggressive environments
- resistance to pitting and crevice corrosion
- resistance to stress corrosion cracking
- high fatigue strength
- good weldability and machinability
These characteristics make Inconel 725 an optimal choice for operation in severe conditions.
Chemical Composition
| Element | Content % |
|---|---|
| Nickel (Ni) | 55–59 |
| Chromium (Cr) | 19–22 |
| Molybdenum (Mo) | 7–9.5 |
| Niobium (Nb) | 2.75–4 |
| Titanium (Ti) | 1–1.7 |
| Iron (Fe) | balance |
| Carbon (C) | ≤0.03 |
Mechanical Properties
Main mechanical properties of Inconel 725:
- Tensile Strength (Rm): 965–1170 MPa
- Yield Strength (Rp0.2): 725–830 MPa
- Elongation: ≥ 25 %
- Hardness: up to 35 HRC
High strength and corrosion resistance allow UNS N07725 to be used for manufacturing components operating in extreme conditions.
