Inconel 825 Pipe
Inconel 825 pipe is a commonly used trade term for Incoloy 825, an alloy of nickel iron chromium known as UNS N08825 and produced to ASTM B423 standards. The alloy is suited to be used in a corrosive chemical environment where it must resist sulfuric and phosphoric acid corrosion, stress corrosion cracking by chlorides and reducing conditions. Incoloy 825 is corrosion resistant and retains its mechanical stability throughout the long service life in even the most aggressive of service environments when compared to the standard austenitic stainless steels.
Pipes with Inconel 825 are commonly suggested in the main process piping in chemical processes, offshore, marine, and pollution control. They are made under a balanced alloy content, stabilized with titanium and enriched with molybdenum and copper hence could be utilized in those applications that need a long term corrosion resistant property and dimensional stability.
Stellar Alloys provides seamless and welded Inconel 825 pipes as per project and export needs. Our supply line supplies the ASTM-certified piping structures to the industrial installations necessitating the quality consistency, proven records, and reliable delivery schedules.
Table of Contents
- Inconel 825 Pipe Supplier and Manufacturer
- What Is Incoloy 825 UNS N08825
- Inconel 825 Pipe Specifications ASTM B423
- Seamless and Welded Inconel 825 Pipes
- Inconel 825 Pipe Size Range and Schedules
- Chemical Composition of Incoloy 825 Pipe
- Mechanical Properties of UNS N08825 Pipe
- Corrosion Resistance and Service Temperature
Inconel 825 Pipe Supplier and Manufacturer
Stellar Alloys is a reliable supplier and manufacturer of Inconel 825 piping, which assists the industrial clients as well as EPC contractors and procurement departments with ASTM B423 compliant piping. Our uniform and welded Inconel 825 pipes are used in chemical plants, offshore facilities, oil and gas processing facilities and other applications where corrosion is a significant concern.
Our production and sourcing strengths enable us to maintain standard inventory and project specifications. All supplies are supported with mill test certification and inspection report in accordance with international quality standards.
The Inconel 825 pipes also belong to a broader range of corrosion-free material used in industrial piping systems. Buyers considering the use of nickel-based alloys in various service situations tend to consider wider solution types including Inconel alloy piping, nickel-based alloy pipe systems and other aggressive environment high-performance alloys. Inconel 600, Inconel 625, and Inconel 800 are commonly compared with regard to operating temperature and degree of corrosion through grade selection. Simultaneously, other alloy lines like Hastelloy alloys, and Monel alloys as well as Titanium piping materials can be evaluated in relation to specialized chemical, marine, or acid handling.
What Is Incoloy 825 UNS N08825
Incoloy 825 (UNS N08825) is a special nickel, iron, and chromium alloy. It was meant to withstand oxidizing (rusting) and reducing conditions. Molybdenum and copper are added to allow it to resist sulfuric and phosphoric acids better, and titanium is added to minimize the possibility of corrosion between grains of the metal.
Alloy 825 has enhanced resistance to chloride stress corrosion cracking and acid attack compared to the traditional stainless steels. This makes Incoloy 825 a perfect option as far as chemical handling equipment, marine and pollution control equipment is concerned where corrosion failure may result in undesirable shutdowns and high cost maintenance.
Inconel 825 Pipe Specifications ASTM B423
Parameter | Details |
Material | Inconel 825 / Incoloy 825 |
UNS Number | UNS N08825 |
ASTM Standard | ASTM B423 / ASME SB423 |
DIN Werkstoff | 2.4858 |
Manufacturing | Seamless, Welded |
Pipe Form | Round Pipes |
Outside Diameter | 6 mm to 1219 mm |
Wall Thickness | 0.5 mm to 20 mm |
Schedules | SCH 5 to XXS |
Heat Treatment | Annealed / Solution Annealed |
Certification | EN 10204 3.1 / 3.2 |
Seamless and Welded Inconel 825 Pipes
Seamless and Welded Inconel 825 Pipes
Seamless Inconel 825 pipes are preferred for high-pressure and high-service conditions that require a uniform structure and resistance to leaks. The purposes of these pipes are typically heat exchangers, acid transfer, and offshore piping.
Inconel 825 Welded Pipe
There is also Welded Inconel 825, which offers a cost effective alternative in the use of larger diameters and moderate pressure applications. They are commonly employed in chemical process piping, marine exhaust, and industrial installations that need corrosion resistance but dimensional flexibility.
Inconel 825 Pipe Size Range and Schedules
NPS | OD (mm) | Common Schedules |
1/2″ | 21.34 | SCH 10, 40, 80 |
1″ | 33.4 | SCH 10, 40, 80 |
2″ | 60.33 | SCH 10, 40, 80 |
4″ | 114.3 | SCH 10, 40 |
6″ | 168.28 | SCH 40, 80 |
8″ | 219.08 | SCH 40 |
Chemical Composition of Incoloy 825 Pipe
Element | Percentage |
Nickel (Ni) | 38 – 46 |
Chromium (Cr) | 19.5 – 23.5 |
Iron (Fe) | Balance |
Molybdenum (Mo) | 2.5 – 3.5 |
Copper (Cu) | 1.5 – 3.0 |
Titanium (Ti) | 0.6 – 1.2 |
Mechanical Properties of UNS N08825 Pipe
Property | Value |
Tensile Strength | 550 MPa (min) |
Yield Strength (0.2%) | 220 MPa (min) |
Elongation | 30% |
Density | 8.14 g/cm³ |
Melting Range | 1370–1400°C |
Corrosion Resistance and Service Temperature
Inconel 825 pipes provide high resistance against sulfuric and phosphoric acids, stress corrosion cracking induced by chlorides, and reducing chemical conditions. The alloy is reliable when used in continual service temperatures up to around 540 °C; it can be used in chemical and marine applications.
Incoloy 825 is used where, as compared to higher strength nickel alloys, acid resistance is a greater concern than very high temperature strength, and provides long life in corrosive service environments.
Testing Inspection and Certifications
Test | Standard |
Positive Material Identification | ASTM E1476 |
Hydrostatic Test | ASTM A999 |
Ultrasonic Testing | ASTM A388 |
Radiographic Inspection | ASME Section V |
Certification | EN 10204 3.1 / 3.2 |
Inconel 825 Pipe Price
Product | Price |
Inconel 825 Seamless Pipe | |
Inconel 825 Welded Pipe |
Note: Prices depend on pipe size, wall thickness, schedule, order quantity, testing requirements, and prevailing nickel market rates. Please contact us for the latest quotation.
Why Choose Stellar Alloys for Inconel 825 Pipes & Tubes?
By selecting Stellar Alloys as your Inconel 825 Pipes and Tubes, you are entering into a relationship with a company that is accurate in every technical aspect and a world ally. Having a twenty years of experience as reliable trader in the supply of Inconel 825 Pipes and Tubes, we have been able to establish good reputation with all industries like chemical processing, oil and gas industry, marine engineering, pollution control and even in the nuclear industry. Our ISO and PED certified factories are furnished with advanced manufacturing and testing equipment, where all seamless and welded products are of high quality and standards as per the international standards. In addition to the quality of the products, we also give our full attention to documentation that will offer the mill test certificates, the PMI reports, and the export records that are fully compliant with the order.
The difference with Stellar Alloys is that we are in a position to offer competitive prices without reducing quality or delivery schedules. Our export and logistics network is robust which means that we cater to our clients all over the world in order to meet their small scale project needs as well as large-scale industrial demands. Technical excellence and responsive after-sales service have enabled us to be the customer-oriented choice among global customers with a long-term reliable value in the outlook of a high-performance and a dependable value in the Inconel 825 piping solutions. This is especially significant with Inconel 825 piping where by the accurate alloy chemistry and corrosion resistance has a direct bearing on the performance in the acid and chloride-rich service environments.
Related Products
Frequently Asked Questions About Inconel 825 Pipe
Inconel 825 pipes are primarily used in environments involving aggressive chemical exposure. They are widely applied in chemical processing plants, acid handling systems, pollution-control equipment, marine installations, and nuclear fuel reprocessing units. Their strong resistance to sulfuric and phosphoric acids makes them suitable for transporting corrosive fluids and gases under pressure.
The main difference lies in their alloy design and application focus. Inconel 825 (Incoloy 825) is alloyed with molybdenum, copper, and titanium, which significantly improves resistance to reducing acids and chloride-induced stress corrosion cracking. Inconel 800, on the other hand, is primarily designed for high-temperature strength and oxidation resistance. In short, Inconel 825 is preferred for corrosive chemical environments, while Inconel 800 is used mainly for elevated temperature service.
No. Inconel 825 is non-magnetic in its annealed condition. This property, combined with its corrosion resistance, makes it suitable for applications where magnetic interference must be avoided, such as instrumentation systems and chemical processing equipment.
Inconel 825 pipes are commonly used in chemical processing, oil and gas, marine engineering, pollution control, and nuclear industries. These sectors rely on Alloy 825 for its ability to withstand acidic environments, chloride exposure, and long-term corrosive service where standard stainless steels may fail.
Yes. Inconel 825 pipes can be welded using standard welding processes such as TIG and MIG. The alloy’s titanium stabilization helps prevent intergranular corrosion during welding, making it suitable for fabrication and field welding in corrosive service conditions. Proper welding procedures and filler material selection are recommended for optimal performance.
Inconel 825 pipes are manufactured in accordance with ASTM B423 and ASME SB423 specifications. These standards define the chemical composition, mechanical properties, heat treatment, and dimensional requirements for Alloy 825 pipes used in corrosive service applications.