Inconel 625 (UNS N06625) Nickel Alloy Sealing Ring for Oil & Gas, Offshore, Subsea, Chemical Processing and Corrosive-Service Equipment
Inconel 625 (UNS N06625) Forged Nickel Alloy Sealing Ring
Inconel 625 (UNS N06625) Nickel Alloy Sealing Rings are manufactured from a nickel-chromium-molybdenum alloy, offering excellent corrosion resistance, oxidation resistance, and good high-temperature strength. They are suitable for oil & gas, offshore, subsea, chemical processing, and corrosive-service applications, including valves, pressure equipment, piping connections, and critical sealing systems.
Key Features
- Provides strong resistance to chlorides, seawater, and various corrosive chemical media.
- Maintains good strength and stability under elevated temperatures and demanding service conditions.
- Suitable for high-temperature, oxidizing environments and long-term service.
- Precision-machined dimensions and stable material properties help ensure reliable sealing performance.
- Designed for demanding applications in oil & gas, offshore, subsea, and chemical processing environments.
- Offers high tensile strength and good toughness for high-pressure equipment and valve sealing components.
Typical Applications
- Used in oil & gas valves, wellhead equipment, pressure control equipment, and piping sealing systems.
- Applied in offshore production equipment, manifolds, valves, and high-pressure piping systems.
- Used in sealing components for reactors, pumps, valves, piping, and chemical processing equipment.
- Applied in sealing systems for refining units, petrochemical piping, and high-temperature/high-pressure equipment.
- Suitable for sealing applications involving chlorides, seawater, and other corrosive media.
Chemical Composition (wt%)
| Element | Ni | Cr | Mo | Nb + Ta | Fe | C | Mn | Si | Al | Ti | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Range | ≥ 58.0 | 20.0–23.0 | 8.0–10.0 | 3.15–4.15 | ≤ 5.0 | ≤ 0.10 | ≤ 0.50 | ≤ 0.50 | ≤ 0.40 | ≤ 0.40 | ≤ 1.0 |
Mechanical Properties (Solution Annealed)
| Property | Value |
|---|---|
| Tensile Strength (Rm) | ≥ 827 MPa (120 ksi) |
| Yield Strength (Rp0.2) | ≥ 414 MPa (60 ksi) |
| Elongation (A5) | ≥ 30 % |
| Density | 8.44 g/cm³ |
| Hardness | ≤ 287 HB |
| Modulus of Elasticity | 205 GPa |
| Max Service Temperature | ≤ 593°C (1100°F) |
Precautions
- Avoid Work Hardening : Use suitable tooling, cutting parameters, and cooling.
- Protect Sealing Surfaces : Prevent scratches, dents, and contamination.
- Control Installation Load : Prevent excessive compression or deformation.
- Match Service Conditions : Select according to temperature, pressure, and media.
Quality Assurance
Inconel 625 (UNS N06625) Nickel Alloy Sealing Rings are manufactured to strict ASTM B564 / ASME SB564 requirements. Fully inspected for dimensions, surface quality, hardness, PMI/OES and NDT as required. All products are supplied with full material traceability, MTRs, heat-treatment records and inspection reports.
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