Introduction
Hastelloy B2 Pipe Fittings are highly demanded in industries where superior corrosion resistance and mechanical durability are essential. Manufactured from a nickel-molybdenum alloy, these fittings are known for their excellent performance in aggressive chemical environments such as hydrochloric acid, sulfuric acid, and hydrogen chloride gas.
As a trusted Hastelloy B2 pipe fittings supplier and exporter, we deliver precision-engineered products that meet global quality standards. Our fittings ensure safe and reliable fluid handling in the most demanding industrial applications. With years of expertise and a global client base, we specialize in providing solutions that combine durability, precision, and long-term performance.
What is Hastelloy B2?
Hastelloy B2 (UNS N10665, ASTM B366) is a nickel-molybdenum alloy that offers exceptional resistance to reducing agents and strong acids. Its optimized composition minimizes the formation of carbide precipitates during welding, ensuring excellent corrosion resistance in both welded and heat-affected zones.
This alloy is widely used in chemical and petrochemical industries for its outstanding resistance to hydrochloric acid at all concentrations and temperatures. It also provides excellent protection against hydrogen chloride, sulfuric acid, and phosphoric acid.
Chemical Composition & Mechanical Properties
The superior performance of Hastelloy B2 Pipe Fittings is due to its well-balanced chemical structure. Below is a typical composition as per ASTM standards:
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 26.0 – 30.0 |
| Iron (Fe) | 2.0 max |
| Chromium (Cr) | 1.0 max |
| Cobalt (Co) | 1.0 max |
| Carbon (C) | 0.02 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.10 max |
Mechanical Properties:
- Tensile Strength: 760 MPa (min)
- Yield Strength: 350 MPa (min)
- Elongation: 40% (min)
- Density: 9.22 g/cm³
These properties make Hastelloy B2 ideal for fittings exposed to corrosive media and high-pressure systems.
Types of Hastelloy B2 Pipe Fittings
We manufacture and export a complete range of Hastelloy B2 fittings to suit various industrial requirements. Each fitting type is designed for reliability, leak-free performance, and long service life.
Elbow
Used to change the flow direction in pipelines, Hastelloy B2 elbows are available in 45°, 90°, and 180° configurations.
Tee
Facilitates branch connections in pipelines. Available as equal and reducing tees for versatile installation.
Reducer
Used to connect pipes of different diameters. Available as concentric and eccentric reducers for smooth flow transition.
Cross
A four-way fitting ideal for complex piping systems in chemical and petrochemical industries.
Cap
Seals the end of a pipe system to prevent leakage or contamination.
Coupling
Joins two pipe sections securely and ensures leak-free connections.
Each fitting is tested and certified to ASTM B366 standards, ensuring consistent quality across every piece.
Key Features & Advantages
Choosing Hastelloy B2 pipe fittings provides several advantages for industries operating in harsh environments:
- Outstanding Corrosion Resistance: Performs excellently in hydrochloric and sulfuric acid.
- High Mechanical Strength: Maintains integrity under high pressure and temperature.
- Excellent Weldability: Resists carbide precipitation during welding.
- Durability & Longevity: Designed for long-term service life in aggressive chemical systems.
- Dimensional Accuracy: Manufactured to tight tolerances for perfect fitment.
- Low Maintenance: Reduces downtime and replacement costs.
These features make Hastelloy B2 fittings one of the most reliable options for chemical processing plants and other critical applications.
Applications & Industries Served
Hastelloy B2 fittings are used across a wide range of industries that demand superior corrosion resistance and mechanical performance.
Industries Using Hastelloy B2 Fittings:
- Chemical & Petrochemical Plants: For handling hydrochloric and sulfuric acid.
- Pharmaceutical Industry: Used in reactors and processing equipment.
- Marine & Offshore Applications: Excellent resistance to seawater and brine.
- Power Generation: For pipelines exposed to corrosive steam and gases.
- Pulp & Paper Industry: Ideal for bleaching and digestion processes.
- Heat Exchangers & Process Equipment: Ensures efficiency and safety.
These applications highlight the versatility and reliability of Hastelloy B2 fittings in critical operations.
Standards, Specifications & Testing
All our Hastelloy B2 fittings comply with leading international standards:
- Standards: ASTM B366, ASME SB366, ANSI B16.9, MSS SP-43
- Size Range: ½” to 48” (Seamless & Welded)
- Pressure Ratings: Schedule 10S to Schedule XXS
- Types: Buttweld, Socket Weld, and Forged
Quality Tests Conducted:
- Positive Material Identification (PMI)
- Hydrostatic Pressure Test
- Radiography Test
- Intergranular Corrosion Test
- Mechanical & Dimensional Inspection
Every fitting is supplied with test certificates and inspection reports to ensure compliance and traceability.
Equivalent Grades & Material Comparison
Here’s how Hastelloy B2 compares with similar alloys:
| Alloy Grade | UNS No. | Key Feature |
|---|---|---|
| Hastelloy B2 | N10665 | Resistant to HCl & reducing agents |
| Hastelloy B3 | N10675 | Improved stability & fabrication |
| Hastelloy C22 | N06022 | Better resistance to oxidizing agents |
Hastelloy B2 vs B3:
While both alloys resist hydrochloric acid, B3 offers better thermal stability. However, B2 remains the preferred choice for systems operating in strongly reducing environments.
Why Choose Us as Your Supplier & Exporter
As a leading Hastelloy B2 Pipe Fittings Manufacturer, Supplier, and Exporter, we are committed to delivering premium quality and service excellence.
Our Strengths:
- Global Reach: Exporting to over 40 countries.
- Advanced Infrastructure: Equipped with CNC machinery and in-house testing.
- Quality Certifications: ISO 9001:2015, PED, and ASME compliant.
- Competitive Pricing: Direct factory rates with no compromise on quality.
- Custom Solutions: Made-to-order fittings in various dimensions and thicknesses.
Our Promise:
We ensure on-time delivery, superior packaging, and end-to-end documentation support for hassle-free imports.
Call to Action:
Contact us today to request a quote or catalog for Hastelloy B2 Pipe Fittings — our experts will guide you to the perfect solution for your industrial needs.
To learn more about our commitment to quality and industry expertise, visit our About Us page. For inquiries, quotations, or project support, please reach out through our Contact Us page — our team will be glad to assist you.
Conclusion
Hastelloy B2 Pipe Fittings stand as a reliable choice for industries requiring superior corrosion resistance and mechanical strength. Designed to perform under extreme chemical conditions, these fittings guarantee safety, efficiency, and durability.
As a trusted manufacturer, supplier, and exporter, we ensure our Hastelloy B2 fittings meet the highest international standards. Whether for chemical processing, power generation, or marine environments — our products deliver long-lasting performance and consistent quality.
Contact us today to learn more about our full range of Hastelloy B2 fittings and request your customized quotation.
FAQ – Hastelloy B2 Pipe Fittings
1. What are Hastelloy B2 Pipe Fittings?
Hastelloy B2 Pipe Fittings are components made from a nickel-molybdenum alloy (UNS N10665) designed for connecting, changing direction, or terminating pipes in corrosive chemical environments. They provide excellent resistance to hydrochloric acid and other strong reducing agents.
2. What is the chemical composition of Hastelloy B2?
Hastelloy B2 primarily contains nickel (Ni) and molybdenum (Mo) with small amounts of iron, cobalt, and chromium.
This composition gives the alloy exceptional resistance to hydrochloric acid, hydrogen chloride gas, and other aggressive media.
3. What are the advantages of Hastelloy B2 Pipe Fittings?
- Outstanding corrosion resistance in reducing conditions
- Excellent mechanical strength and toughness
- High ductility and weldability
- Long service life in harsh environments
- Resistance to pitting and stress-corrosion cracking
4. In which industries are Hastelloy B2 fittings used?
These fittings are widely used in:
- Chemical and Petrochemical plants
- Pharmaceutical industry
- Marine and Offshore applications
- Power generation units
- Pulp and paper processing
- Heat exchangers and pressure vessels
5. What standards apply to Hastelloy B2 fittings?
They are manufactured as per:
- ASTM B366 / ASME SB366 for buttweld fittings
- ANSI B16.9 / MSS SP-43 for dimensional accuracy
These standards ensure high performance, durability, and global compatibility.
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