Nickel-based Inconel 625 industrial pipe applications
Nickel-based Inconel 625 industrial pipe applications
Inconel 625 (IN625) industrial piping is suitable for industries requiring high performance in corrosive and high-temperature environments, including aerospace, oil and gas, marine, nuclear power, and chemical processing. Its excellent resistance to acid and alkali corrosion, high strength, good weldability, and stability at high temperatures make it suitable for exhaust systems, subsea equipment, heat exchangers, and reactor components.
What are the applications of Inconel 625?
Due to its excellent weldability and high formability, Inconel 625 is commonly manufactured into pipes, plates, flanges, and bars. It is an ideal choice for applications such as offshore piping systems, heat exchangers, chemical transfer lines, and gas turbine piping systems.
UNS N06625 Pipe Specification
| Inconel 625 pipe ASTM Specification | Details |
|---|---|
| Specifications | ASTM B167 / B829 / B517, ASTM B705, ASTM B444, ASTM B474 |
| AMS Standards | AMS 5581, AMS 5599, AMS 5666 |
| Manufacturing Types | Seamless, ERW, Welded, Fabricated, CDW, CDS, DOM, CEW, 100% X-Ray Welded |
| Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS |
| Industry Standards | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Annealed Condition Grades | ASTM B444 Grade 1, ASTM B444 Grade 2, ASME SB444 GR.1, ASME SB444 GR.2 |
| Value-Added Services | Cutting, Beveling, Threading, Destructive and Non-Destructive Testing, Ultrasonic Testing, Draw & Expansion to required sizes and lengths |
| End Types | Plain End, Beveled End, Treaded Alloy 625 Pipe |
Chemical Composition of 625 Inconel Pipe
| Element | C | Mn | Si | Fe | S | Cr | Al-Ti | Ni |
|---|---|---|---|---|---|---|---|---|
| min. | ----- | ----- | ----- | ----- | ----- | 20.0 | --- | 58.0 |
| max. | 0.10 | 0.50 | 0.50 | 5.00 | 0.015 | 23.0 | 0.40 | - |
Mechanical Properties of Inconel 625 Pipe
| Alloy | Tensile Stress (min) | Yield Stress (0.2% Proof, min) | Elongation (% in 50mm, min) | Hardness (max) |
|---|---|---|---|---|
| 625 | 135,000 Psi / 930 MPa | 75,000 Psi / 517 MPa | 42.5 | -- |
Inconel 625 Pipe Schedule Chart
| Size | Schedule |
|---|---|
| 1/8" (.405" O.D.) | SCH 40, 80 |
| 3/8" (.675" O.D.) | SCH 10, 40, 80 |
| 1/2" (.840" O.D.) | SCH 5, 10, 40, 80, 160, XXH |
| 1/4" (.540" O.D.) | SCH 10, 40, 80 |
| 3/4" (1.050" O.D.) | SCH 10, 40, 80, 160, XXH |
| 1" (1.315" O.D.) | SCH 5, 10, 40, 80, 160, XXH |
| 1-1/4" (1.660" O.D.) | SCH 10, 40, 80, 160, XXH |
| 1-1/2" (1.900" O.D.) | SCH 10, 40, 80, 160, XXH |
| 2" (2.375" O.D.) | SCH 10, 40, 80, 160, XXH |
| 2-1/2" (2.875" O.D.) | SCH 10, 40, 80, 160, XXH |
| 3" (3.500" O.D.) | SCH 5, 10, 40, 80, 160, XXH |
| 3-1/2" (4.000" O.D.) | SCH 10, 40, 80, 160, XXH |
| 4" (4.500" O.D.) | SCH 10, 40, 80, 160, XXH |
| 5" (5.563" O.D.) | SCH 10, 40, 80, 160, XXH |
| 6" (6.625" O.D.) | SCH 5, 10, 40, 80, 120, 160, XXH |
| 8" (8.625" O.D.) | SCH 5, 10, 40, 80, 120, 160, XXH |
| 10" (10.750" O.D.) | SCH 10, 20, 40, 80 (.500), TRUE 80 (.500) |
| 12" (12.750" O.D.) | SCH 10, 20, 40 (.375), TRUE 40 (.406), SCH 80 (.500) |
| 14" (14.000" O.D.) | SCH 10 (.188), SCH 40 (.375) |
| 16" (16.000" O.D.) | SCH 10 (.188), SCH 40 (.375) |
| 18" (18.000" O.D.) | SCH 40 (.375) |
Key Applications and Industries for Inconel 625 Pipe:
Aerospace: Due to its high strength and corrosion resistance, IN625 pipe is widely used in aircraft exhaust systems, ducting, turbine shrouds, and thrust reversers.
Offshore and Marine: Its excellent resistance to seawater, freshwater, and natural salts makes it an ideal choice for offshore piping systems and other subsea equipment in marine environments.
Oil and Gas: IN625 pipe is used in the oil and gas industry for subsea equipment, well pump motor shafts, and various chemical processing applications involving corrosive fluids.
Nuclear Energy: The alloy's resistance to high pressures and temperatures, combined with its resistance to degradation under harsh conditions, makes it a key material for nuclear power plant components such as reactor pressure vessels and steam generators.
Chemical Processing: IN625 pipe's excellent chemical resistance makes it suitable for chemical transportation pipelines, natural gas processing, and pollution control plants.
Power Generation: These pipes are used in heat exchangers, waste-to-energy incineration plants, and solar power plants that utilize thermal salt for energy storage. Automotive: IN625 is used in exhaust systems and turbocharger systems of high-performance vehicles in high-pressure and high-temperature environments.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.
