Products Description
Our Advantages
1. Premium Raw Materials
Our Inconel 625 Seamless Pipe uses high-purity Inconel 625 (UNS N06625) alloy from reputable steel mills. Each batch undergoes PMI (Positive Material Qualification) verification to ensure accurate chemical composition, guaranteeing consistent corrosion resistance and mechanical properties.
2. Strong Corrosion Resistance
Inconel 625 offers superior resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, making it one of the most corrosion-resistant nickel alloys. Our pipes undergo intergranular corrosion and pitting tests, providing extended service life, operational safety, and reliability in industries such as offshore oil and gas, chemical processing, power generation, marine engineering, and aerospace.
3. Precise Dimensions
Our Inconel 625 Seamless Pipe is produced using fully automated cold-drawing, polishing, and sizing production lines. Dimensional checks, visual surface inspection, and straightness measurements ensure that the pipe's outer diameter, wall thickness, straightness, and ovality meet ASTM standards.
4. High Temperature Resistance
Our seamless tubes possess excellent high-temperature resistance and oxidation resistance. In high-temperature environments, they can withstand temperatures up to 980°C. They have passed high-temperature tensile and creep tests and are suitable for high-temperature, high-pressure, and thermal cycling environments.
5. Excellent Weldability
Our Inconel 625 has passed weldability tests and offers advantages such as no preheating required, low risk of hot cracking, and no need for post-weld heat treatment. It is compatible with various welding methods such as TIG, MIG, and SAW, facilitating secondary processing.
application areas
- Oil and Gas Industry: Subsea pipelines, offshore platforms.
- Aerospace: Exhaust systems, jet engine components, high-temperature piping.
- Chemical Processing: Heat exchangers, acid treatment systems.
- Power Generation: Superheater and reheater tubes, high-temperature steam piping, etc.
- Marine Engineering: Seawater desalination equipment, seawater cooling systems, etc.
Chemical Composition
| Element | Ni | Cr | Mo | Nb + Ta | Fe | C | Mn | Si | P | S | Al + Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 625 | ≥58 | 20–23 | 8–10 | 3.15–4.15 | ≤5 | ≤0.10 | ≤0.50 | ≤0.50 | ≤0.015 | ≤0.015 | ≤0.50 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| Inconel 625 Gr.1 (Annealed) | ≥760 | ≥345 | ≥30 | ≤220 |
| Inconel 625 Gr.2 (Solution Annealed) | ≥930 | ≥515 | ≥30 | ≤260 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| Inconel 600 | It exhibits good high-temperature oxidation resistance but has relatively low strength. |
| Inconel 617 | More suitable for extremely high-temperature environments (up to 1100°C). |
| Inconel 718 | Excellent mechanical strength; used in aerospace applications. |
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