Inconel 718 Pipe Fittings
Inconel 718 Pipe Fittings are high-performance nickel-chromium alloy components designed to provide superior resistance to corrosion, oxidation, and high temperatures. Manufactured, stocked, and exported by Rose Metal Industries, these fittings are widely used across Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and Andaman & Nicobar Islands, as well as global industrial markets. They are ideal for industries requiring durability and reliability in critical environments, including aerospace, chemical, power generation, and marine applications.
Our Inconel 718 Pipe Fittings are available in a variety of forms including elbows, tees, reducers, caps, and flanges, manufactured according to international standards such as ASTM B423, ASME SB423, and EN 10253. Each fitting is precision-engineered to ensure dimensional accuracy, excellent surface finish, and mechanical integrity under extreme operating conditions. Rose Metal Industries guarantees consistent quality through stringent inspection and testing procedures..
The chemical composition of Inconel 718 Pipe Fittings typically includes Nickel (50–55%), Chromium (17–21%), Molybdenum (2.8–3.3%), Niobium (4.75–5.5%), along with Cobalt, Iron, Carbon, Manganese, and Silicon in minor amounts. This alloying combination imparts exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, making Inconel 718 Pipe Fittings suitable for highly aggressive chemical and marine environments..
Mechanical properties of Inconel 718 Pipe Fittings are designed to withstand extreme conditions, with tensile strength ranging from 1240–1400 MPa, yield strength of 1030–1200 MPa, elongation of 15–20%, and hardness between 250–310 HB, depending on the heat treatment and processing method. This makes them highly reliable for high-pressure and high-temperature applications such as turbine piping, heat exchangers, nuclear reactors, and offshore piping systems..
| Property | Typical / Standard |
|---|---|
| Grades | Inconel 718 (UNS N07718 / ASTM B423 / EN 2.4668) |
| Standards | ASTM B423, ASME SB423, EN 10253, ASME/UNS |
| Forms | Seamless & welded pipes, elbows, tees, reducers, flanges |
| Surface Finish | Hot-rolled, pickled, polished |
| Testing | Dimensional, tensile, hardness, PMI, MTC, NDT |
Chemical Composition (typical ranges)
| Element | Inconel 718 (wt %) |
|---|---|
| Nickel (Ni) | 50–55 |
| Chromium (Cr) | 17–21 |
| Iron (Fe) | Balance |
| Cobalt (Co) | ≤1.0 |
| Molybdenum (Mo) | 2.8–3.3 |
| Niobium + Tantalum (Nb+Ta) | 4.75–5.5 |
| Copper (Cu) | ≤0.3 |
| Manganese (Mn) | ≤0.35 |
| Silicon (Si) | ≤0.35 |
| Aluminium (Al) | 0.2–0.8 |
| Titanium (Ti) | 0.65–1.15 |
| Carbon (C) | ≤0.08 |
| Manganese (Mn) | ≤0.35 |
Mechanical Properties (typical)
| Property | Typical Value | Notes |
|---|---|---|
| Tensile Strength (UTS) | 1030–1380 MPa | Solution treated & aged |
| Yield Strength (0.2% offset) | 758–1100 MPa | High strength at elevated temperature |
| Elongation | 12–20% | Varies with pipe thickness |
| Hardness | 217–321 HB | Depends on heat treatment |
Equivalent Grades & Designations
| Common Name | ASTM / AISI | EN | UNS |
|---|---|---|---|
| Inconel 718 | ASTM B423 / B622 | 2.4668 | UNS N07718 |
Dimension Chart — Pipe & Fittings (Common sizes)
Standard diameters and wall thicknesses supplied in mm & inch.
| Outer Diameter (mm) | Outer Diameter (inch) | Wall Thickness (mm) | Schedule / Tolerance |
|---|---|---|---|
| 6–50 | 1/4"–2" | 1–5 | ASTM/ASME |
| 60–200 | 2.5"–8" | 5–15 | Custom |
| 200–600 | 8"–24" | 6–25 | Custom |
Typical Applications
- Aerospace engine components and exhaust systems
- High-pressure chemical and petrochemical piping
- Marine components exposed to seawater
- Power generation: turbines and heat exchangers
- Oil & gas production and transport pipelines
- General high-temperature & corrosive environment piping
Rose Metal Industries supplies these fittings in various dimensions, schedules, and pressure ratings, conforming to global standards. All products are thoroughly tested, including positive material identification (PMI), dimensional checks, tensile and hardness tests, and are accompanied by Mill Test Certificates (MTC). Equivalent grades meet ASTM, ASME, and UNS N07718 specifications, ensuring global compatibility and acceptance..
Typical applications of Inconel 718 Pipe Fittings include process piping, chemical reactors, heat exchangers, marine and offshore piping, power generation, aerospace fuel and exhaust systems, and high-temperature process lines. With prompt availability across Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and Andaman & Nicobar Islands, Rose Metal Industries ensures reliable supply for both domestic and international customers..
Frequently Asked Questions (FAQ)
Q1: What are Inconel 718 Pipe Fittings used for?
A: Inconel 718 Pipe Fittings are used in high-temperature, high-pressure, and corrosive environments such as chemical processing, marine, aerospace, and power generation industries.
Q2: Do you provide mill test certificates (MTC)?
A: Yes — Rose Metal Industries issues MTCs and can facilitate third-party inspection and PMI/chemical analysis on request for all Inconel 718 Pipe Fittings.
Q3: What standards do your Inconel 718 Pipe Fittings comply with?
A: Our fittings are manufactured to ASTM B423, ASME SB423, EN 10253, and other customer-specified international standards to ensure quality and reliability.
Q4: Can you supply custom sizes and pressure ratings?
A: Yes — Rose Metal Industries offers custom diameters, lengths, wall thicknesses, schedules, and pressure ratings. Contact our sales team for lead times and minimum order quantities.
Q5: How do I choose Inconel 718 over other nickel alloys?
A: Inconel 718 provides superior strength, corrosion resistance, and temperature stability compared to other nickel alloys. Choose it for high-pressure, high-temperature, or aggressive chemical applications where reliability is critical.