ARK Stainless INC. is a trusted manufacturer and global supplier of high-quality Inconel 600/601/625/718 and Incoloy 800/800HT/825 Pipes & Tubes. Designed for superior strength and resistance, these pipes and tubes are fabricated using premium ferrous and non-ferrous alloys to meet stringent industrial demands. We also offer customized solutions tailored to client-specific specifications and project requirements, ensuring secure packaging and on-time delivery.
Our Inconel and Incoloy pipes and tubes are manufactured with a wide array of specifications such as tolerance levels, wall thickness, outer diameter, pressure ratings, shapes, lengths, and surface finishes. These precision-engineered components exhibit outstanding performance in extreme environments due to their rich composition of Nickel, Chromium, Iron, Molybdenum, Copper, Titanium, Carbon, and other strengthening elements, offering exceptional resistance to oxidation, carburization, and corrosion.
We supply a full range of Inconel and Incoloy products including Inconel 625 Seamless Pipes, Incoloy 800 Welded Tubes, Inconel 718 ERW Tubes, Incoloy 825 EFW Pipes, and ASTM B163/B167/B407/B423 grade Pipes and Tubes. These are manufactured in accordance with international standards such as ASTM, ASME, and DIN, making them suitable for high-temperature and high-pressure applications.
ARK Stainless INC.’s Inconel and Incoloy Pipes & Tubes are known for their remarkable mechanical and physical properties including high tensile and yield strength, excellent ductility, low thermal expansion, good thermal conductivity, and resistance to stress corrosion cracking. These pipes and tubes are available in various types such as seamless, ERW, EFW, fabricated, and welded, making them ideal for industries like aerospace, marine, nuclear, chemical processing, and power generation.
| Grade | Ni | Fe | C | Mn | Si | Cu | Cr | S | Mo | Co | Al | Ti | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 72.0 min | 6.0-10.0 | 0.15 max | 1.0 max | 0.5 max | 0.5 max | 14.0-17.0 | 0.015 max | — | 1.0 max | 0.35 max | 0.2 max | — |
| Inconel 601 | 58.0-63.0 | Balance | 0.10 max | 1.0 max | 0.5 max | 1.0 max | 21.0-25.0 | 0.015 max | — | 1.0 max | 1.0-1.7 | 0.6 max | — |
| Inconel 625 | 58.0 min | 5.0 max | 0.10 max | 0.5 max | 0.5 max | 0.5 max | 20.0-23.0 | 0.015 max | 8.0-10.0 | 1.0 max | 0.4 max | 0.4 max | 3.15-4.15 |
| Inconel 718 | 50.0-55.0 | Balance | 0.08 max | 0.35 max | 0.35 max | 0.3 max | 17.0-21.0 | 0.015 max | 2.8-3.3 | 1.0 max | 0.2-0.8 | 0.65-1.15 | 4.75-5.50 |
| Incoloy 800 | 30.0-35.0 | 39.5 min | 0.10 max | 1.5 max | 1.0 max | 0.75 max | 19.0-23.0 | 0.015 max | — | — | 0.15-0.60 | 0.15-0.60 | — |
| Incoloy 800HT | 30.0-35.0 | Balance | 0.06-0.10 | 1.5 max | 1.0 max | 0.75 max | 19.0-23.0 | 0.015 max | — | — | 0.25-0.60 | 0.25-0.60 | — |
| Incoloy 825 | 38.0-46.0 | 22.0 min | 0.05 max | 1.0 max | 0.5 max | 1.5-3.0 | 19.5-23.5 | 0.03 max | 2.5-3.5 | 1.0 max | 0.2 max | 0.6 max | — |
| Grade | Density (g/cm³) | Melting Point (°C) | Tensile Strength (psi / MPa) | Yield Strength 0.2% Offset (psi / MPa) | Elongation (%) |
|---|---|---|---|---|---|
| Inconel 600 | 8.47 | 1413–1482 | 95,000 psi / 655 MPa | 45,000 psi / 310 MPa | 40% |
| Inconel 601 | 8.11 | 1360–1411 | 80,000 psi / 550 MPa | 30,000 psi / 205 MPa | 30% |
| Inconel 625 | 8.44 | 1290–1350 | 135,000 psi / 930 MPa | 75,000 psi / 517 MPa | 30% |
| Inconel 718 | 8.19 | 1260–1336 | 180,000 psi / 1240 MPa | 150,000 psi / 1035 MPa | 12–20% |
| Incoloy 800 | 7.94 | 1357–1385 | 85,000 psi / 586 MPa | 30,000 psi / 205 MPa | 45% |
| Incoloy 800HT | 7.94 | 1357–1385 | 85,000 psi / 586 MPa | 35,000 psi / 240 MPa | 45% |
| Incoloy 825 | 8.14 | 1370–1400 | 85,000 psi / 586 MPa | 30,000 psi / 205 MPa | 30% |
Inconel 600/601/625/718 Pipes and Tubes are widely utilized across various sectors including aerospace, nuclear reactors, chemical processing, power plants, marine applications, heat exchangers, gas turbines, and automotive industries. These pipes and tubes are favored for their outstanding resistance to oxidation, corrosion, and high-temperature environments. Engineered with precise dimensional accuracy and manufactured using advanced forging and seamless or welded techniques, they provide excellent mechanical strength, thermal stability, and long service life. Their superior resistance to scaling and cracking under thermal stress makes them indispensable for critical applications requiring reliable performance under harsh conditions.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | GOST | OR | BS | JIS | EN |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | UNS N06600 | 2.4816 | Z2CND17-12 | 06ХН28МДТ | CN7M | NA | NA | EN 2.4816 |
| Inconel 601 | UNS N06601 | 2.4851 | NA | 06ХН28МДТ | NA | NA | NA | EN 2.4851 |
| Inconel 625 | UNS N06625 | 2.4856 | NA | 06ХН28МДТБР | NA | NA | NA | EN 2.4856 |
| Inconel 718 | UNS N07718 | 2.4668 | NA | 07ХНД4АГ9НМ | NA | NA | NA | EN 2.4668 |
Incoloy 800/800H/800HT/825 Pipes & Tubes are widely used across numerous industries including power generation, chemical processing, petrochemical plants, heat exchangers, nuclear reactors, food processing, pharmaceutical manufacturing, seawater desalination, gas pipelines, and structural applications. These pipes and tubes are specially designed to withstand high temperatures and corrosive environments, offering outstanding resistance to oxidation, carburization, and stress corrosion cracking. Manufactured with precise chemical composition and advanced heat treatment processes, Incoloy 800/800H/800HT/825 Pipes & Tubes exhibit excellent mechanical strength, thermal stability, and durability, making them ideal for critical industrial systems requiring reliable and long-lasting performance.
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
|---|---|---|---|---|---|---|---|---|
| Incoloy 800 | 1.4876 | S30800 | 12X18H10T | NA | NA | NA | NA | NA |
| Incoloy 800H | 1.4958 | S30815 | 12X18H11 | NA | NA | NA | NA | NA |
| Incoloy 800HT | 1.4959 | S30815 | 12X18H12T | NA | NA | NA | NA | NA |
| Incoloy 825 | 2.4858 | N08825 | 12X18H14T | NA | NA | NA | NA | NA |
