Incoloy 825 Tube Fittings Manufacturer, Supplier & Exporter in India, USA, Turkey & Nigeria
Incoloy 825 Tube Fittings are manufactured from a nickel-iron-chromium alloy with molybdenum, copper and titanium additions for applications requiring resistance to a broad range of corrosive environments.
Mcneil Instruments is an Incoloy 825 Tube Fittings Manufacturer, Supplier, Stockist & Exporter in India, supplying instrumentation and tube fittings in configurations including double ferrule fittings, compression fittings, tube unions, elbows, tees, connectors, adapters and bulkhead fittings.
Incoloy 825 is identified as UNS N08825, Werkstoff No. 2.4858 and Alloy 825. Its alloy chemistry combines approximately 38–46% nickel, 19.5–23.5% chromium, 2.5–3.5% molybdenum and 1.5–3.0% copper, with titanium added for stabilization.
The combination of nickel, molybdenum and copper supports resistance to reducing acids such as sulfuric and phosphoric acid, while chromium contributes resistance to oxidizing environments. Molybdenum also improves resistance to pitting and crevice corrosion, and titanium helps stabilize the alloy against sensitization under appropriate heat treatment.
What Are Incoloy 825 Tube Fittings?
Incoloy 825 Tube Fittings are precision components used to connect, branch, redirect, terminate or transition tubing in instrumentation and process systems.
They are selected where tubing may be exposed to corrosive process media and where a nickel alloy offers advantages over conventional stainless steel or lower-alloy materials.
Typical applications include:
Chemical-processing systems
Sulfuric-acid service
Phosphoric-acid service
Oil & gas equipment
Chemical instrumentation
Pickling equipment
Pollution-control systems
Process-control systems
Acid-production equipment
Heat exchangers
Corrosive-fluid transfer systems
Actual suitability depends on chemical concentration, temperature, contaminants, aeration, flow conditions and other process variables.
Incoloy 825 Tube Fittings Specifications
Parameter Specification
Material Incoloy 825
Alloy Alloy 825
UNS N08825
Werkstoff No. 2.4858
Alloy Family Nickel-Iron-Chromium-Molybdenum-Copper Alloy
Nickel 38.0–46.0%
Chromium 19.5–23.5%
Iron 22.0% Min
Molybdenum 2.5–3.5%
Copper 1.5–3.0%
Titanium 0.6–1.2%
Wrought Fittings ASTM B366 / ASME SB366
Forged Components ASTM B564 / ASME SB564, where applicable
Seamless Pipe & Tube ASTM B423 / ASME SB423
Heat-Exchanger Tube ASTM B163 / ASME SB163, where applicable
Welded Pipe/Tube Applicable ASTM/ASME product-form specification
Butt-Weld Dimensions ASME B16.9, where applicable
Forged SW / Threaded Dimensions ASME B16.11, where applicable
Connection Types Compression, Double Ferrule, Threaded, Tube-to-Tube
Thread Options NPT, BSP, BSPT, BSPP and Metric, as specified
Size Inch and metric configurations
Material Condition Annealed / specification-dependent
Surface Finish Machined / polished / specified
Certification MTC / EN 10204 documentation where required
ASTM B366 is the relevant wrought nickel-alloy fitting specification for applicable Incoloy 825 fitting forms, while ASTM B564 covers applicable nickel-alloy forgings. Special Metals lists ASTM B366 and B564 among the major specifications for Alloy 825.
Technical Specification of Incoloy 825 Tube Fittings
| Parameter | Specification |
|---|---|
| Alloy | Incoloy 825 (UNS N08825) |
| Standard | ASTM B366 / ASME SB366 |
| Nickel Content | ~38–46% |
| Features | High resistance in sulfuric and nitric acid environments |
| Applications | Marine exhausts, acid plants, scrubbers |
Mechanical Properties of Incoloy 825
For annealed Incoloy 825, commonly referenced minimum mechanical properties include:
Property Minimum / Representative Value
Tensile Strength 690 MPa / 100 ksi
Yield Strength, 0.2% Offset 310 MPa / 45 ksi
Elongation 45%
Some product-form specifications use different minimum values. For example, published ASTM-based data for annealed tube and forgings can differ according to product form and governing specification. Therefore, the certified values on the material test certificate should be used for the supplied fitting or tube.
Why Choose Incoloy 825 Tube Fittings?
Incoloy 825 is selected when corrosion resistance across a combination of reducing and oxidizing environments is more important than simply achieving high-temperature strength.
Key Advantages
High nickel content
High chromium content
Molybdenum addition
Copper addition
Titanium stabilization
Resistance to many reducing acids
Resistance to selected oxidizing acids
Good resistance to sulfuric acid
Good resistance to phosphoric acid
Resistance to pitting corrosion
Resistance to crevice corrosion
Resistance to chloride stress-corrosion cracking
Good resistance to intergranular corrosion in suitable conditions
Good mechanical strength
Good ductility
Suitable for chemical-processing applications
Incoloy 825 is primarily a corrosion-resistant alloy rather than a creep-strength alloy. Applications where creep and stress rupture govern at high temperature should be evaluated separately.
Manufacturing Process of Incoloy 825 Tube Fittings
1. Material Selection
Certified UNS N08825 material is selected according to the applicable specification.
2. Cutting
Approved starting material is cut to the required component dimensions.
3. Forming or Forging
The required fitting geometry is produced through the appropriate manufacturing process.
4. Heat Treatment
The material is annealed or heat treated according to the applicable specification and required condition.
5. CNC Machining
Precision machining produces:
Tube bores
Ferrule seats
Threads
Internal passages
Connection ends
External profiles
6. Finishing
Components undergo:
Deburring
Cleaning
Surface finishing
Thread inspection
Dimensional finishing
7. Final Inspection
Finished fittings are inspected against the applicable drawing, material specification and customer requirements.
Applications of Incoloy 825 Tube Fittings
Chemical Processing Industry
Potential applications include:
Chemical reactors
Acid-processing systems
Process instrumentation
Chemical injection
Sampling systems
Heat exchangers
Corrosive-fluid handling
Oil & Gas Industry
Potential applications include:
Oil and gas well systems
Process instrumentation
Chemical injection
Corrosive process systems
Sampling systems
Downstream processing
Pickling Industry
Incoloy 825 can be used in suitable pickling applications involving acidic process conditions.
Potential equipment includes:
Heating coils
Tanks
Baskets
Chains
Process instrumentation
Pollution-Control Equipment
Potential applications include:
Scrubber systems
Chemical dosing
Process instrumentation
Corrosive-fluid systems
Acid Production
Potential applications include:
Acid-processing systems
Process piping
Instrumentation
Heat exchangers
Chemical transfer systems
Nuclear and Specialized Chemical Processing
Special Metals lists nuclear fuel reprocessing and radioactive-waste handling among historical applications of Alloy 825. Any nuclear application, however, should be specified against the applicable project, regulatory and material-control requirements rather than relying on a general alloy designation.
Grade Highlights
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Superior Corrosion Resistance: Protects against oxidation, acids, and chloride attack, ensuring long service life.
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High Strength and Ductility: Maintains mechanical integrity under high-temperature and corrosive conditions.
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Fabrication Friendly: Easily formed and welded into elbows, tees, tube spools, and custom fittings.
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Reliable Worldwide Performance: Used across industrial sectors in Africa, Europe, UAE, and India.
Applications:
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Chemical and petrochemical piping
-
Seawater and marine systems
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Offshore installations and power plants
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Heat exchangers and pressure vessels
What Mcneil Instruments Does in the Incoloy 825 Tube Fittings Industry
At Mcneil Instruments, we manufacture and supply precision-engineered Incoloy 825 Tube Fittings developed for industries requiring dependable performance under aggressive chemical and high-pressure operating conditions.
We provide:
- Compression Tube Fittings
- Instrumentation Tube Fittings
- Double Ferrule Tube Fittings
- Hydraulic Tube Fittings
- High Pressure Tube Fittings
- Incoloy Pipe Connectors
- Custom Tube Fittings
Our products are manufactured using premium-grade alloy materials and advanced machining technologies to ensure leak-proof and reliable industrial performance.
Types of Incoloy 825 Tube Fittings We Supply
Different industrial systems require different fitting configurations depending on pressure conditions and installation requirements.
Male Connector Tube Fittings
Used for connecting tubing systems to threaded female ports securely.
Female Connector Tube Fittings
Provide reliable female-threaded connections in industrial piping systems.
Union Tube Fittings
Designed to connect two tubing sections while maintaining leak-proof flow systems.
Elbow Tube Fittings
Used to change flow direction within instrumentation and process piping systems.
Tee Tube Fittings
Suitable for dividing or combining fluid and gas flow paths.
Bulkhead Tube Fittings
Ideal for panel-mounted and enclosure-based piping installations.
Double Ferrule Tube Fittings
Provide superior vibration resistance and secure sealing in high-pressure applications.
Chemical Composition of Incoloy 825 Tube Fittings
| Element | Composition |
| Nickel (Ni) | 38–46% |
| Chromium (Cr) | 19.5–23.5% |
| Iron (Fe) | 22% Min |
| Molybdenum (Mo) | 2.5–3.5% |
| Copper (Cu) | 1.5–3% |
| Titanium (Ti) | 0.6–1.2% |
Technical Specifications of Incoloy 825 Tube Fittings
Material Grade
- Incoloy 825
- UNS N08825
- WNR 2.4858
Standards
- ASTM B366
- ASME SB366
- ASTM B564
- ASME SB564
Size Range
- 1/8” to 2”
- 3mm to 50mm
Pressure Ratings
- 1000 PSI
- 3000 PSI
- 6000 PSI
- 10,000 PSI
Thread Types
- NPT
- BSPT
- BSPP
End Connections
- Threaded
- Welded
- Compression Ends
- JIC Ends
Surface Finish
- Polished
- Pickled
- Passivated
Features of Incoloy 825 Tube Fittings
Excellent Corrosion Resistance
Incoloy 825 offers outstanding resistance against sulfuric acid, phosphoric acid, seawater, and aggressive industrial chemicals.
Resistance to Chloride Stress Corrosion Cracking
Suitable for chloride-containing environments and harsh offshore applications.
High Mechanical Strength
Provides reliable pressure handling capability and structural stability in demanding industrial operations.
Oxidation & Reducing Environment Resistance
Performs efficiently in both oxidizing and reducing chemical environments.
Leak-Proof Sealing
Precision-engineered ferrule systems ensure vibration-resistant and dependable sealing performance.
Long Operational Life
Strong alloy composition and precision manufacturing improve durability and reduce maintenance requirements.
Key Highlights of Incoloy 825 Tube Fittings
- Excellent resistance to acidic and corrosive environments
- Suitable for offshore and marine applications
- Superior resistance to stress corrosion cracking
- Reliable performance in chemical processing industries
- High strength and dimensional accuracy
- Long-term industrial safety and operational reliability
Industries Using Incoloy 825 Tube Fittings
Incoloy 825 Tube Fittings are widely used across multiple industrial sectors worldwide.
Chemical Processing Industry
Used for handling aggressive chemicals, acids, and corrosive industrial fluids.
Petrochemical Industry
Suitable for process piping systems, hydraulic systems, and chemical handling applications.
Oil & Gas Industry
Used in offshore platforms, instrumentation systems, and refinery piping applications.
Marine & Offshore Industry
Ideal for seawater systems and offshore engineering applications.
Power Generation Industry
Suitable for boilers, condensers, and thermal processing systems.
Pollution Control Industry
Used in flue gas desulfurization systems and chemical treatment systems.
Pharmaceutical Industry
Used in hygienic and contamination-free fluid handling systems.
Water Treatment Industry
Suitable for desalination plants and industrial water handling systems.
Why Choose Mcneil Instruments for Incoloy 825 Tube Fittings?
Precision Manufacturing
Our tube fittings are manufactured using advanced production technologies and strict quality inspection procedures.
International Quality Compliance
Products comply with ASTM, ASME, and international industrial standards.
Wide Product Availability
Available in multiple sizes, pressure ratings, and custom configurations.
Corrosion-Resistant Solutions
Designed for aggressive chemical, offshore, and industrial environments.
Reliable Global Supply
We maintain strong inventory support and timely domestic and international delivery capabilities.
Leak-Free Industrial Performance
Our fittings are trusted worldwide for safety, durability, and long-term operational reliability.
Contact Mcneil Instruments – Incoloy 825 Tube Fittings Supplier in India
If you are searching for reliable Incoloy 825 Tube Fittings Manufacturers, Suppliers, Stockists, and Exporters in India, Mcneil Instruments delivers precision-engineered tube fitting solutions developed for corrosion resistance, leak-proof sealing, pressure handling capability, and long-term industrial reliability.
Frequently Asked Questions – Incoloy 825 Tube Fittings
What makes Incoloy 825 fittings ideal for acid-resistant applications?
Incoloy 825 has excellent resistance to sulfuric, nitric, and hydrochloric acids, making it suitable for chemical plants, scrubbers, and marine exhaust systems worldwide.
Can these fittings handle seawater and offshore applications?
Yes, Incoloy 825 tube fittings are highly resistant to chloride-induced corrosion and are widely used in **marine and offshore piping systems** across India, Europe, Africa, and UAE.
Are custom sizes and fittings available for special projects?
Absolutely. We manufacture Incoloy 825 tube fittings in various sizes, wall thicknesses, and connection types including elbows, tees, and unions to meet **project-specific global requirements**.
Which industries benefit most from Incoloy 825 tube fittings?
They are used in chemical, petrochemical, marine, offshore, and industrial piping applications where **corrosion resistance and durability** are critical.
Do you export Incoloy 825 tube fittings internationally?
Yes, as a certified manufacturer, supplier, and exporter, we deliver Incoloy 825 tube fittings across India, Africa, Europe, UAE, and other worldwide markets with reliable quality and timely service.
Why are Incoloy 825 Tube Fittings a suitable choice for corrosive industrial systems in the USA, Turkey, and Nigeria?
Incoloy 825 Tube Fittings offer strong resistance to aggressive acids, seawater, chloride environments, and both oxidizing and reducing conditions. This makes them suitable for chemical processing, offshore, marine, petrochemical, water treatment, and pollution-control applications. Mcneil Instruments supplies various configurations and supports international requirements for customers in the USA, Turkey, and Nigeria.