ARK Stainless Inc. is a manufacturer, supplier and exporter of Inconel Forged Fittings in India. We manufacture socket weld and threaded forged fittings in Inconel 600, 601, 625 and 718 grades for high-temperature, high-pressure and corrosive service applications.
Inconel alloys are nickel-chromium-based materials widely used in process industries where resistance to heat, oxidation and corrosion is required. These forged fittings are commonly installed in chemical processing plants, offshore facilities, power generation projects, marine systems and oil and gas installations operating under severe service conditions.
Our range includes forged elbows, tees, couplings, unions, caps, plugs, bushings, crosses, adapters, pipe nipples and outlet fittings manufactured in accordance with ASTM and ASME standards.
Inconel forged fittings are used in chemical processing plants, offshore oil and gas facilities, marine systems, power generation projects, heat treatment plants, aerospace equipment, petrochemical installations and thermal processing units. These fittings are commonly selected for piping systems exposed to high temperatures, corrosive chemicals, seawater and aggressive process environments.
We manufacture Inconel forged elbows, tees, couplings, unions, caps, plugs, bushings, pipe nipples and outlet fittings in socket weld and threaded configurations. These forged fittings are commonly installed in process piping, heat exchanger connections, high-temperature utility lines and pressure-containing systems where alloy performance is critical to long-term operation.
Inconel forged fittings offer high tensile strength, good toughness and reliable mechanical performance across a broad temperature range. Depending on the grade, these alloys maintain strength at elevated temperatures while providing resistance to oxidation, scaling and corrosion in severe operating environments.
Inconel forged fittings are manufactured to ASTM B564 and ASME SB564 material specifications with dimensions conforming to ASME B16.11 requirements. Additional manufacturing standards may include MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-97 and BS 3799, depending on the product type. Available grades include Inconel 600, Inconel 601, Inconel 625 and Inconel 718.
Inconel forged fittings are available in Class 2000#, 3000#, 6000# and 9000# pressure ratings in accordance with ASME B16.11 requirements. Threaded forged fittings are generally supplied in Class 2000#, 3000# and 6000#, while socket weld forged fittings are available in Class 3000#, 6000# and 9000#. The selected pressure class depends on the design pressure, temperature and operating conditions of the piping system.
Socket weld and threaded Inconel forged fittings are used in process piping systems operating under elevated temperatures, high pressures and corrosive service conditions. Socket weld fittings are frequently specified for refinery, petrochemical and power generation projects, while threaded fittings are commonly used for smaller pipe sizes, instrumentation lines and utility connections. NPT, BSP and BSPT thread forms are available to suit project specifications.
Inconel forged fittings are widely used where conventional stainless steel grades may not provide adequate performance. Depending on the alloy grade, these fittings offer resistance to oxidation, scaling, high-temperature corrosion and chloride-containing environments. Their ability to maintain mechanical strength under elevated temperatures makes them suitable for critical industrial applications.
Inconel forged fittings are inspected and tested to verify compliance with applicable material specifications and project requirements. Testing may include PMI verification, chemical analysis, mechanical testing, dimensional inspection and visual examination. Material test certificates, heat number traceability records and third-party inspection documentation can be supplied when specified by the customer or project.
| Grade | Ni | Fe | C | Mn | Si | Cu | Cr | S | Mo | Co | Al | Ti | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | - | - | - | - | - |
| 601 | 58.0 – 63.0 | Balance | 0.10 max | 1.0 max | 0.50 max | 1.0 max | 21.0 – 25.0 | 0.015 max | 8.0 - 10.0 | - | 1.0 – 1.7 | - | - |
| 625 | 58.0 max | 5.0 max | 0.10 max | 0.50 max | 0.50 max | - | 20.0 - 23.0 | 0.015 max | 8.0 - 10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15 - 4.15 |
| 718 | 50 - 55 | - | 0.08 max | 0.35 max | 0.35 max | 0.3 max | 17 - 21 | 0.015 max | 2.8 - 3.3 | 1.0 max | - | - | - |
| 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 | - |
| 800H | 30.0 - 35.0 | 39.5 min | 0.05 - 0.10 | 1.5 max | 1.0 max | 0.75 max | 19.0 - 23.0 | 0.015 max | - | - | 0.15 - 0.60 | 0.15 - 0.60 | - |
| 800HT | 30.0 - 35.0 | 39.5 min | 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 | - |
| 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 – 1455 | 95,000 / 655 | 45,000 / 310 | 40 |
| Inconel 601 | 8.11 | 1360 – 1411 | 80,000 / 550 | 30,000 / 205 | 35 |
| Incoloy 800 / 800H / 800HT | 7.94 | 1385 | 75,000 / 520 | 30,000 / 205 | 30 |
| Incoloy 825 | 8.14 | 1400 | 80,000 / 550 | 32,000 / 220 | 30 |
ARK Stainless Inc. manufactures and supplies Inconel 600, 601, 625 and 718 forged fittings for piping systems operating in high-temperature and corrosive service environments. These nickel-based alloys are widely used in chemical processing plants, offshore installations, refineries, power generation facilities, gas processing units and heat exchanger systems where elevated temperatures and corrosive media are present.
Different Inconel grades are selected according to service conditions, with applications ranging from furnace equipment and thermal processing systems to marine installations and chemical process piping. Inconel forged fittings are often specified for applications involving heat, pressure and corrosive process fluids.
Our manufacturing range includes socket weld and threaded elbows, tees, couplings, unions, caps, plugs, bushings, crosses and pipe nipples produced in accordance with ASTM and ASME standards for industrial piping applications.
Inconel 600 Forged Fittings are manufactured from a nickel-chromium alloy known for its resistance to oxidation and corrosion across a wide temperature range. These forged fittings are commonly used in furnace equipment, heat treatment plants, chemical processing systems and thermal processing applications where elevated temperatures are part of normal operating conditions. Inconel 600 is also used in equipment exposed to oxidising and reducing environments.
Inconel 601 Forged Fittings contain increased chromium and aluminium content, providing improved resistance to oxidation at elevated temperatures. These forged fittings are regularly used in industrial furnaces, thermal processing equipment, petrochemical plants and heat treatment systems. The alloy is widely specified for applications involving continuous exposure to heat and high-temperature process gases.
Inconel 625 Forged Fittings are frequently used in offshore platforms, marine systems, chemical processing facilities and oil and gas installations. The alloy offers good resistance to seawater, chloride-bearing environments and a wide range of corrosive process media. Inconel 625 forged fittings are commonly installed in process piping, subsea systems, seawater handling equipment and sour service applications.
Inconel 718 Forged Fittings are used in aerospace, power generation and high-pressure industrial systems where strength at elevated temperatures is important. The alloy develops high mechanical strength through age hardening and is often specified for applications involving cyclic loading, pressure fluctuations and demanding operating conditions.
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | GOST | OR | BS | JIS | EN |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | N06600 | 2.4816 | NC15FE11M | ÐœÐЖМц 28-2,5-1,5 | ÐИ868 | NA 13 | NCF 600 | NiCr15Fe |
| Inconel 601 | N06601 | 2.4851 | NC23FeA | XH60BT | ÐИ868 | NA 49 | NCF 601 | NiCr23Fe |
| Inconel 625 | N06625 | 2.4856 | NC22DNB4M | Ð¥Ð75МБТЮ | ÐИ602 | NA 21 | NCF 625 | NiCr22Mo9Nb |
| Inconel 718 | N07718 | 2.4668 | - | - | - | - | NCF 718 | - |
| Grade | UNS Number | Key Characteristics | Typical Applications |
| Inconel 600 | N06600 | Oxidation and corrosion resistance at elevated temperatures | Oxidation and corrosion resistance at elevated temperatures |
| Inconel 601 | N06601 | Improved oxidation resistance and high-temperature stability | Thermal processing, petrochemical plants, incinerators |
| Inconel 625 | N06625 | High strength with excellent corrosion resistance | Offshore, marine, chemical processing, oil & gas |
| Inconel 718 | N07718 | High mechanical strength and creep resistance | Aerospace, turbines, power generation |
| Specifications Table | Details |
| Material Grades | Inconel 600, 601, 625, 718 |
| Standards | ASTM B564, ASME SB564 |
| Dimensions | ASME B16.11, MSS SP-79, SP-83, SP-95, SP-97, BS 3799 |
| Size Range | 1/8" NB to 4" NB |
| Type | Socket Weld & Threaded |
| Pressure Classes | 2000#, 3000#, 6000#, 9000# |
| Thread Type | NPT, BSP, BSPT |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| Inconel 600 | 655 | 310 | 40 |
| Inconel 601 | 550 | 205 | 30 |
| Inconel 625 | 930 | 517 | 42.5 |
| Inconel 718 | 930 | 482+ | 45 |
ARK Stainless Inc. is a manufacturer, supplier and exporter of Incoloy 800, 800H, 800HT and 825 Forged Fittings in India. These nickel-iron-chromium alloy forged fittings are used in piping systems that operate at elevated temperatures or in corrosive process environments where long-term material stability is important.
Incoloy forged fittings are commonly found in chemical plants, refineries, power stations, offshore installations, fertiliser plants, heat exchanger systems and other process industries where piping is exposed to high temperatures or corrosive service conditions. Different Incoloy grades are selected according to the process environment, operating temperature and corrosion resistance required for the application.
Incoloy 800, 800H and 800HT are widely used in high-temperature applications because of their resistance to oxidation, carburisation and thermal exposure. Incoloy 825 contains additions of molybdenum and copper, providing improved resistance to acidic environments and chloride-containing process fluids.
Our range of Incoloy forged fittings includes elbows, tees, couplings, unions, caps, plugs, bushings, crosses, reducers and pipe nipples. Available in socket weld and threaded designs, these fittings are manufactured to ASTM and ASME requirements for use in chemical processing, power generation, petrochemical and high-temperature piping systems.
Incoloy forged fittings are commonly used in process industries where piping systems are exposed to elevated temperatures, corrosive chemicals or both. Typical applications include petrochemical plants, chemical processing facilities, heat exchanger systems, power generation units, offshore installations, pharmaceutical plants, pulp and paper mills and marine equipment. The selection of Incoloy 800, 800H, 800HT or 825 depends on factors such as operating temperature, process fluid composition and corrosion conditions within the system.
Incoloy forged fittings are often selected where both corrosion resistance and elevated-temperature performance are required. Compared with conventional stainless steel grades, Incoloy alloys maintain mechanical strength at higher operating temperatures and offer improved resistance to oxidation, carburisation and certain corrosive process media. These characteristics make them suitable for critical piping systems used in chemical processing, thermal treatment and power generation facilities.
Incoloy forged fittings are used in industries where piping systems operate under elevated temperatures, corrosive process conditions or a combination of both. These fittings are commonly found in petrochemical plants, chemical processing facilities, refineries, power generation units, offshore installations, heat exchangers, fertiliser plants, pulp and paper mills and pollution control systems. Depending on the grade selected, Incoloy forged fittings can be used for handling acidic solutions, seawater, high-temperature gases and aggressive process media.
Our range of Incoloy forged fittings includes elbows, tees, couplings, unions, caps, plugs, bushings, crosses, reducers, adapters, pipe nipples and swage nipples. These fittings are manufactured for applications involving branch connections, flow direction changes, pipe size reductions and end-of-line closures. Both threaded and socket-weld designs are available to suit different piping layouts and installation requirements.
Incoloy forged fittings are known for maintaining good mechanical strength over a wide temperature range. Grades such as Incoloy 800, 800H and 800HT are frequently selected for elevated-temperature service because of their resistance to creep, oxidation and thermal fatigue. Incoloy 825 combines good mechanical strength with corrosion resistance, making it suitable for piping systems exposed to acidic and chloride-containing environments. These characteristics allow Incoloy alloys to perform reliably in demanding industrial applications.
We manufacture Incoloy forged fittings in accordance with ASTM B564 and ASME SB564 specifications. Dimensional standards include ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-97 and BS 3799. Available grades include Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811) and Incoloy 825 (UNS N08825). Fittings are available in sizes from 1/8" NB to 4" NB in both socket weld and threaded configurations.
Incoloy forged fittings are manufactured in Class 2000#, 3000#, 6000# and 9000# pressure ratings in accordance with ASME B16.11 requirements. Threaded forged fittings are generally supplied in Class 2000#, 3000# and 6000#, while socket weld forged fittings are commonly available in Class 3000#, 6000# and 9000#. The appropriate pressure class is selected based on the design pressure, operating temperature and service conditions of the piping system.
We manufacture Incoloy forged fittings in both socket weld and threaded configurations for high-temperature and corrosion-resistant piping systems. Socket weld fittings are commonly used where a permanent welded connection is preferred, while threaded fittings are often selected for smaller bore piping systems that require easier installation, maintenance or replacement. NPT, BSP and BSPT threaded connections can be supplied to suit project specifications and piping standards.
Incoloy 800 forged fittings are commonly used in heat treatment equipment, chemical processing systems, power generation plants and industrial furnace applications. The alloy offers good resistance to oxidation and carburisation at elevated temperatures while maintaining mechanical strength during long-term service.
Incoloy 800H forged fittings are a higher carbon version of Alloy 800 developed for improved creep and stress rupture properties at elevated temperatures. These fittings are frequently used in reformer tubes, steam superheaters, petrochemical processing equipment and high-temperature piping systems.
Incoloy 800HT forged fittings provide enhanced high-temperature strength through controlled carbon, aluminium and titanium content. They are commonly specified for furnace components, ethylene cracking units, heat treatment equipment and applications involving prolonged exposure to temperatures above 600°C.
Incoloy 825 forged fittings contain additions of molybdenum and copper that improve resistance to sulphuric acid, phosphoric acid and chloride-containing environments. These fittings are widely used in chemical processing plants, pollution control equipment, offshore installations, seawater systems and pickling operations.
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
|---|---|---|---|---|---|---|---|---|
| Incoloy 800 | 1.4876 | N08800 | ÐИ670 | Z8NC32-21 | NCF 800 | NA 15 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | ÐИ670 | Z8NC33-21 | NCF 800H | NA 15(H) | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | ÐИ670 | - | NCF 800HT | NA 15(HT) | X8NiCrAlTi32-21 | XH32T |
| Incoloy 825 | 2.4858 | N08825 | å袩703 | NFE30C20DUM | NCF 825 | NA 16 | NiCr21Mo | XH38BT |
| Grade | UNS Number | Main Feature | Typical Applications |
| Incoloy 800 | N08800 | Resistance to oxidation and carburisation | Heat exchangers, furnace components, petrochemical plants |
| Incoloy 800H | N08810 | Higher carbon content for improved creep strength | High-temperature process piping, reformers |
| Incoloy 800HT | N08811 | Enhanced elevated-temperature strength | Thermal processing equipment, furnaces |
| Incoloy 825 | Incoloy 825 | Excellent resistance to acidic and chloride environments | Chemical processing, offshore and marine systems |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| Incoloy 800 | 520 | 205 | 30 |
| Incoloy 800H | 450-500 | 170-200 | 30 |
| Incoloy 825 | 550 | 220 | 30 |
| Grade | Common Industries |
| Incoloy 800 | Petrochemical, heat treatment, power generation |
| Incoloy 800H | Reformers, furnace piping, process heaters |
| Incoloy 800HT | Thermal processing, cracking units, high-temperature plants |
| Incoloy 825 | Chemical processing, offshore, marine, pollution control |
