Hastelloy B2 Tube Fittings Manufacturer, Supplier & Exporter in India, USA, Turkey & Nigeria
Hastelloy B2 Tube Fittings are manufactured from a nickel-molybdenum alloy designed primarily for resistance to reducing acids and other highly corrosive chemical environments. Hastelloy B2 is identified by UNS N10665 and Werkstoff No. 2.4617.
Mcneil Instruments is a Hastelloy B2 Tube Fittings Manufacturer, Supplier, Stockist & Exporter in India, offering tube and instrumentation fittings in configurations including double ferrule fittings, compression fittings, tube unions, elbows, tees, connectors, adapters and bulkhead fittings.
Hastelloy B2 contains approximately 26–30% molybdenum, while chromium, iron, carbon and silicon are kept relatively low. This composition gives the alloy its strong resistance to many reducing chemical environments, particularly hydrochloric-acid service.
The alloy is supplied in a solution-annealed condition for applicable product forms, and material condition is important when corrosion resistance, fabrication and mechanical properties are critical.
What Are Hastelloy B2 Tube Fittings?
Hastelloy B2 Tube Fittings are precision components used to connect, branch, redirect, terminate or transition tubing in instrumentation and process systems.
They are used where tubing systems may be exposed to corrosive chemical media and where the selected nickel alloy provides advantages over conventional stainless steels or lower-alloy materials.
Common applications include:
Chemical-processing systems
Hydrochloric-acid service
Chemical instrumentation
Process-control systems
Pharmaceutical processing
Petrochemical equipment
Acid-handling systems
Process sampling systems
Heat exchangers
Corrosive-fluid transfer systems
The suitability of Hastelloy B2 depends on the actual chemical composition, concentration, temperature, aeration, contaminants and operating conditions.
Hastelloy B2 Tube Fittings Specifications
Parameter Specification
Material Hastelloy B2
Alloy Alloy B2
UNS N10665
Werkstoff No. 2.4617
Alloy Type Nickel-Molybdenum Alloy
Main Alloying Element Molybdenum
Wrought Fittings ASTM B366 / ASME SB366
Forged Components ASTM B564 / ASME SB564, where applicable
Seamless Tube ASTM B622
Welded Tube ASTM B626
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 Solution Annealed / specification-dependent
Surface Finish Machined / polished / specified
Certification MTC / EN 10204 documentation where required
ASTM B366/B366M covers factory-made wrought nickel and nickel-alloy fittings for pressure piping, including applicable butt-welding and threaded/socket-welding fitting forms.
Material specifications and dimensional standards should be specified separately. For example, ASTM B366 identifies applicable material/product requirements, while ASME B16.9 or B16.11 provides dimensional and rating requirements for the relevant fitting type.
Technical Specification of Hastelloy B2 Tube Fittings
| Parameter | Specification |
|---|---|
| Composition | Ni 65 / Mo 26–30 / Cr 1 / Fe 2.5 max |
| Temperature Range | –196 °C to +315 °C |
| Tensile Strength | ≥485 MPa |
| Yield Strength | ≥170 MPa |
| Hardness | ≤95 HRB |
| Standards | ASTM B366, ASME SB366, B574 |
Chemical Composition of Hastelloy B2
Typical composition requirements for Hastelloy B2 / UNS N10665 are:
Element Composition
Nickel Balance
Molybdenum 26.0–30.0%
Iron 2.0% Max
Chromium 1.0% Max
Cobalt 1.0% Max
Manganese 1.0% Max
Silicon 0.10% Max
Carbon 0.02% Max
Phosphorus 0.04% Max
Sulfur 0.03% Max
The high molybdenum content is a defining feature of Hastelloy B2, while the low chromium and controlled carbon levels support its performance in reducing chemical environments and help limit undesirable precipitation during fabrication.
Mechanical Properties of Hastelloy B2
For solution-annealed material, representative minimum mechanical requirements include:
Property Minimum Value
Tensile Strength 760 MPa / 110 ksi
Yield Strength, 0.2% Offset 350 MPa / 51 ksi
Elongation 40%
Hardness Up to approximately 100 HRB
Mechanical requirements can vary by product form, thickness and applicable specification. The certified values for the supplied heat and product should be taken from the material test certificate.
Manufacturing Process of Hastelloy B2 Tube Fittings
1. Material Selection
Certified UNS N10665 material is selected according to the applicable specification.
2. Cutting
The approved raw material is cut to the required dimensions.
3. Forming or Forging
The required fitting geometry is produced using an appropriate manufacturing process.
4. Solution Annealing
Heat treatment is performed according to the applicable material 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 checked against the drawing, material specification and customer requirements.
Advantages & Applications
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Superior Corrosion Resistance: Resists aggressive acids, chlorides, and reducing chemicals, making it reliable in demanding industrial conditions.
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Wide Temperature and pH Tolerance: Performs effectively under extreme chemical concentrations and varying temperatures.
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Excellent Ductility and Weldability: Enables fabrication of pipe spools, elbows, tees, and other custom fittings without compromising structural integrity.
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Long-Lasting Durability: Reduces maintenance needs and ensures consistent performance in critical piping systems.
Applications:
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Chemical processing plants handling strong acids and reducing agents
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Marine and offshore piping systems
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Desalination and water treatment plants
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Power generation and high-temperature industrial processes
Hastelloy B2 Tube Fittings Manufacturer & Exporter in USA, Turkey & Nigeria
Mcneil Instruments offers Hastelloy B2 Tube Fittings engineered for reliable performance in highly corrosive industrial environments across the USA, Turkey, and Nigeria. These nickel-molybdenum fittings are known for their excellent resistance to reducing acids and localized corrosion, making them a dependable choice for chemical processing, petrochemical, pharmaceutical, marine, and industrial piping systems. Available in multiple forms and connection options, Hastelloy B2 tube fittings can be supplied according to application, size, and project specifications.
Why Work with Mcneil Instruments
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Certified Manufacturer, Supplier & Exporter: Reliable source for Hastelloy B2 tube fittings in India and worldwide.
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Global Reach: Supplying fittings to Africa, Europe, UAE, and other international markets.
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Quality Assurance: Each fitting undergoes rigorous testing for corrosion resistance, mechanical strength, and dimensional accuracy.
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Custom Solutions: Available in various sizes, wall thicknesses, and connection types to meet specific project requirements.
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Timely Delivery: Ensures on-time supply globally, supporting urgent and bulk orders efficiently.
Contact Mcneil Instruments Today – Get high-performance Hastelloy B2 Tube Fittings for demanding chemical, marine, and industrial applications worldwide.
Frequently Asked Questions – Hastelloy B2 Tube Fittings
Why are Hastelloy B2 tube fittings suitable for chemical processing?
Hastelloy B2 tube fittings offer excellent resistance to strong reducing agents, hydrochloric acid, and other corrosive chemicals, making them ideal for chemical and marine industries.
Do you provide custom sizes and connection types for Hastelloy B2 fittings?
Yes, we manufacture Hastelloy B2 tube fittings in a variety of diameters, wall thicknesses, and connection types including tube-to-male, female, union, elbow, and tee fittings to meet project-specific requirements worldwide.
Which industries commonly use Hastelloy B2 tube fittings?
They are widely used in chemical processing, desalination plants, marine and offshore applications, and power generation where high corrosion resistance and mechanical strength are required.
How resistant are Hastelloy B2 tube fittings to corrosion?
Hastelloy B2 fittings are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, ensuring long-lasting durability in extreme chemical and temperature conditions.
Can Hastelloy B2 tube fittings be supplied internationally?
Yes, as a trusted manufacturer, supplier, and exporter, we deliver Hastelloy B2 tube fittings to clients across India, Africa, Europe, UAE, and other worldwide markets with high-quality standards and timely delivery.
What should customers consider when selecting Hastelloy B2 Tube Fittings for projects in the USA, Turkey, and Nigeria?
Customers should consider the operating temperature, pressure, tube dimensions, connection type, chemical medium, and applicable material standards. Hastelloy B2 is particularly valuable where equipment is exposed to aggressive reducing environments, helping provide dependable service life and corrosion protection.