Inconel 625 Pipe
Inconel 625 Pipes are engineered from a nickel-chromium-molybdenum-niobium superalloy known for exceptional resistance to corrosion and remarkable high-temperature strength. These pipes are widely preferred for environments exposed to seawater, aggressive chemicals, elevated temperatures, and high mechanical stress. The alloy’s unique composition provides superior protection against pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making Inconel 625 an industry benchmark for critical applications..
One of the key benefits of Inconel 625 Pipes is their ability to retain mechanical integrity across a wide temperature range, from cryogenic levels to temperatures above 1000°C. This makes them ideal for demanding industries such as offshore oil and gas, chemical processing, aerospace, power generation, and high-temperature furnace systems. Their excellent fatigue strength, creep resistance, and oxidation resistance ensure long service life even in harsh operating environments.
Manufactured by Rose Metal Industries, these pipes are produced using advanced metallurgical processes that ensure dimensional accuracy, structural stability, and compliance with global standards. As a leading manufacturer, stockist, and exporter, Rose Metal Industries supplies high-quality Inconel 625 Pipes to major industrial regions across India, including Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry, and the Andaman & Nicobar Islands, along with international markets. The company maintains a wide inventory of seamless, welded, and fabricated pipe options to meet diverse project requirements.
Inconel 625 Pipes offer excellent weldability due to the alloy’s stabilized composition, which eliminates the need for post-weld heat treatment in most applications. This is especially valuable in process piping, heat exchangers, pressure vessels, and marine components, where reliable welding performance is essential. Their durability minimizes maintenance and prevents unexpected failures, reducing operational downtime and lifecycle cost.
Specifications – Inconel 625 Pipes (Typical)
- Material / Grade: Inconel 625 (UNS N06625)
- Common Standards: ASTM B444 / ASME SB444 (seamless pipe/tube), ASTM B704 / B751 (welded tubing), and related ASTM/ASME specifications for pipe & tube products.
- Forms: Seamless, Welded (ERW/LSAW), Fabricated, Coiled tubing
- Schedules / Wall Thickness: Common schedules XS, SCH40, SCH80, SCH160, XXS and custom thickness (approx. 0.3 mm – 50 mm depending on form).
- OD Range (typical): small-bore tubing (~1/8" / 3 mm OD) up to large-diameter pipes (600 mm+ depending on fabrication). Typical commercial ranges documented for Alloy 625 tubing/pipes include ~6 mm to 630 mm OD and beyond for welded/fabricated items. :contentReference[oaicite:3]{index=3}
- Lengths: Single random, double random, cut-to-length
- End finish: Plain ends, bevelled, welded ends, flanged (per client request)
- Certification: MTC to EN 10204 / 3.1 or equivalent
Chemical Composition – Inconel 625 (Typical)
| Element | Typical / Range (wt. %) |
|---|---|
| Nickel (Ni) | Balance (≈ 58 min) |
| Chromium (Cr) | 20 – 23 |
| Molybdenum (Mo) | 8 – 10 |
| Niobium + Tantalum (Nb+Ta) | 3.15 – 4.15 |
| Iron (Fe) | ≤ 5.0 |
| Carbon (C) | ≤ 0.10 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.50 |
Mechanical Properties – Inconel 625 Pipes (Typical)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≈ 830 MPa (min) |
| Yield Strength (0.2% offset) | ≈ 414 MPa (min) |
| Elongation | ≥ 30% (varies with form and heat treatment) |
| Hardness | ≤ 95 HRB (typical) |
| Density | ≈ 8.44 g/cm³ |
Equivalent Grades / Designations
| System | Equivalent |
|---|---|
| UNS | N06625 |
| Werkstoff | 2.4856 |
| EN / ISO | Alloy 625 equivalents |
Dimension Chart – Typical Pipe / Tube Sizes
Example common sizes. Actual available sizes depend on seamless vs welded construction and manufacturer capability.
| Nominal Pipe Size | Outside Diameter (mm) | Typical Wall Thickness (mm) |
|---|---|---|
| 1/8" NB | 10.3 | 1.0 – 2.0 |
| 1/2" NB | 21.3 | 2.3 – 3.6 |
| 1" NB | 33.4 | 3.6 – 4.5 |
| 2" NB | 60.3 | 3.9 – 6.4 |
| 4" NB | 114.3 | 4.5 – 7.1 |
| 6" NB | 168.3 | 5.6 – 9.5 |
| 8" NB | 219.1 | 6.3 – 12.7 |
| Large OD (fabricated) | 300 – 600+ | custom |
Applications
- Offshore & subsea piping, risers and connectors (marine & coastal projects in Tamil Nadu, Puducherry, Andaman & Nicobar Islands)
- Chemical processing lines subject to chlorides and aggressive media
- Heat exchangers, condensers and boiler tubes
- Oil & gas production and refining, high-pressure lines and valves
- Desalination plants and seawater handling systems
- Aerospace hydraulic lines and high-temperature fluid systems
Inconel 625 Pipes offer excellent weldability due to the alloy’s stabilized composition, which eliminates the need for post-weld heat treatment in most applications. This is especially valuable in process piping, heat exchangers, pressure vessels, and marine components, where reliable welding performance is essential. Their durability minimizes maintenance and prevents unexpected failures, reducing operational downtime and lifecycle cost..
Engineers and designers frequently select Inconel 625 Pipes for applications involving seawater handling, chemical plant piping, oil-well equipment, aerospace tubing, and high-pressure fluid systems. Their corrosion protection and temperature resistance make them suitable for both onshore and offshore installations, including coastal regions where chloride exposure is significant. Whether used in industrial plants, marine engineering, or high-performance aerospace systems, Inconel 625 Pipes consistently deliver superior reliability and performance..
Frequently Asked Questions (FAQ)
Q1: Do you manufacture and export Inconel 625 Pipes?
A: Yes — Rose Metal Industries manufactures, stocks and exports Inconel 625 pipes and tubing worldwide and supplies extensively throughout India including Tamil Nadu, Andhra Pradesh, Karnataka, Telangana, Puducherry and the Andaman & Nicobar Islands.
Q2: Which standards do your Inconel 625 pipes conform to?
A: Typical standards for seamless pipe/tube include ASTM B444 / ASME SB444; welded tubing and other pipe types use the appropriate ASTM/ASME specifications. Please request specific standard or certification when ordering. :contentReference[oaicite:4]{index=4}
Q3: What sizes and schedules are available?
A: We stock common tubing and pipe sizes in a variety of schedules (e.g., SCH10, SCH40, SCH80, XS, XXS etc.) and can supply custom diameters and wall thicknesses per project needs. Typical OD ranges documented commercially include ~6 mm up to 630 mm and larger for welded/fabricated pipe. :contentReference[oaicite:5]{index=5}
Q4: Can Inconel 625 pipes be welded and used in seawater?
A: Yes — Alloy 625 is weldable with recommended procedures and offers excellent resistance to seawater corrosion and chloride stress-corrosion cracking, making it suitable for marine and desalination applications.
Q5: What documentation is supplied?
A: Standard supply includes Mill Test Certificate (MTC), dimensional reports and inspection documentation; additional NDE or third-party certifications can be arranged on request.