Table of Contents
- Introduction
- What are Hastelloy B2 Pipes & Tubes?
- Chemical Composition & Mechanical Properties
- Applications of Hastelloy B2 Pipes & Tubes
- Why Hastelloy B2 Pipes & Tubes are Preferred
- Why Choose Sankalp Alloys
- Quality Standards & Certifications
- Supply & Export from India
- Frequently Asked Questions (FAQs)
Introduction
Hastelloy B2 Pipes & Tubes are heavily requested in processing environments requiring unmatched resistance to pure hydrochloric, sulfuric, and phosphoric acids. As a trusted supplier in India, Sankalp Alloys offers precision-engineered Hastelloy B2 (UNS N10665 / Werkstoff 2.4617) pipes and tubes for critical industries across chemical processing, vacuum furnaces, specialty chemicals, and pharmaceuticals.
Distinguished by its low carbon and iron additions, Hastelloy B2 prevents heat-affected zone corrosion and grain boundary carbide precipitation during welding. Sankalp Alloys provides high-grade seamless and welded tubing solutions engineered to deliver durability and structural integrity under demanding process conditions.
What are Hastelloy B2 Pipes & Tubes?
Hastelloy B2 Pipes & Tubes are solid solution strengthened nickel-molybdenum alloy piping components designed to withstand aggressive reducing media. Available in standard schedules, custom wall thicknesses, outer diameters, and lengths, these tubular products excel in handling hydrogen chloride gas and concentrated non-oxidizing acids.
The nickel-molybdenum base structure ensures high thermal stability and superior resistance to stress corrosion cracking and pitting. Hastelloy B2 pipes and tubes are essential in systems where lower-grade stainless steels or conventional alloys quickly degrade due to acid attack.
Chemical Composition & Mechanical Properties
Chemical Composition of Hastelloy B2 (UNS N10665):
- Nickel (Ni): Balance (~65–74%)
- Molybdenum (Mo): 26.0–30.0%
- Iron (Fe): 2.0% max
- Chromium (Cr): 1.0% max
- Cobalt (Co): 1.0% max
- Manganese (Mn): 1.0% max
- Silicon (Si): 0.10% max
- Carbon (C): 0.02% max
- Phosphorus (P): 0.04% max
- Sulfur (S): 0.03% max
Mechanical Properties:
- Tensile Strength: 760 MPa (110,000 psi) min
- Yield Strength (0.2% Offset): 350 MPa (51,000 psi) min
- Elongation: 40% min
- Density: 9.2 g/cm³
- Melting Point: 1370°C (2500°F)
Applications of Hastelloy B2 Pipes & Tubes
Chemical Processing Industry
Extensively utilized for carrying hydrochloric acid gas, wet HCl, acetic acid, and sulfuric acid through reboilers, piping systems, and reactors.
Vacuum Furnaces & Heat Exchangers
Deployed in thermal equipment, structural furnace piping, and condenser tubing operating under vacuum and reducing chemical environments.
Pharmaceutical & Agrochemical Manufacturing
Applied in synthesis lines, distillation columns, and fluid handling where product contamination must be completely avoided.
Petrochemical & Energy Sectors
Used in alkylation units, catalyst recovery circuits, and acid recycling tubing systems requiring resistance to severe pitting and stress cracking.
Why Hastelloy B2 Pipes & Tubes are Preferred
Hastelloy B2 Pipes & Tubes are widely specified due to their exceptional resistance to hydrochloric acid across all concentrations and temperature ranges. Their minimal carbon content mitigates carbide precipitation during welding operations, allowing pipes to be used in the as-welded condition without requiring post-weld heat treatment.
Their high tensile strength, resistance to pitting and stress-corrosion cracking in reducing environments, and long service life make them an economical solution for aggressive process systems.
Why Choose Sankalp Alloys
High-Quality Manufacturing
Sankalp Alloys ensures precise dimensional accuracy, excellent surface finish, and stringent non-destructive testing (NDT) for all Hastelloy B2 pipes and tubes.
Global Export & Domestic Supply Expertise
We supply and export Hastelloy B2 piping products across domestic and international markets with protective packaging and prompt delivery.
Custom Solutions
We offer customized wall thicknesses, outer diameters, cut lengths, seamless/welded types, and end configurations according to project demands.
Reliable Supply Chain
Our vast inventory and efficient logistics network ensure seamless material dispatch and on-time project execution.
Quality Standards & Certifications
Our Hastelloy B2 Pipes & Tubes comply with key international standards, including:
- ASTM B622 / ASME SB622 (Seamless Pipe & Tube)
- ASTM B619 / ASME SB619 (Welded Pipe)
- ASTM B626 / ASME SB626 (Welded Tube)
- UNS N10665 / Werkstoff Nr. 2.4617
- ISO 9001:2015 Certified Quality System
Supply & Export of Hastelloy B2 Pipes & Tubes from India
Logistics and Delivery
Sankalp Alloys facilitates fast and secure delivery of Hastelloy B2 pipes and tubes across major industrial hubs in India and worldwide.
Documentation
Every order is dispatched with complete documentation, including Mill Test Certificates (EN 10204 3.1), third-party inspection reports, and NACE compliance certificates.
Frequently Asked Questions (FAQs)
Q: What types of Hastelloy B2 Pipes & Tubes do you supply?
A: We supply Hastelloy B2 seamless, ERW, EFW, welded pipes, and hydraulic tubes in custom sizes and standard schedules (SCH 10 to SCH XXS).
Q: Do you export globally?
A: Yes, Sankalp Alloys supplies and exports Hastelloy B2 piping products worldwide with reliable logistics support.
Q: Are test certificates provided?
A: Yes, all shipments include Mill Test Certificates as per EN 10204 3.1 along with chemical and mechanical test documentation.
Q: Can Hastelloy B2 pipes be used in oxidizing environments?
A: No, Hastelloy B2 is designed primarily for reducing environments. It is not recommended for use in oxidizing media or in the presence of ferric/cupric salts.
Conclusion
Hastelloy B2 Pipes & Tubes are critical for industrial operations exposed to severe reducing acid conditions, such as hydrochloric, sulfuric, and acetic acids. Their outstanding resistance to pitting, stress corrosion cracking, and heat-affected zone corrosion ensures uninterrupted service and longevity in complex process pipelines.
Sankalp Alloys stands as a trusted supplier and exporter in India, delivering top-quality Hastelloy B2 pipes and tubes fabricated with exact adherence to international standards and customer specifications.
Contact us today to get the best quotation for your Hastelloy B2 piping requirements.