Hastelloy B2 / B3 Fasteners Suppliers & Exporters in Europe, USA and Gulf Countries
Aurum Overseas supplies Hastelloy B2 / B3 fasteners for aggressive reducing chemical environments, acid-processing industries, refinery systems, and petrochemical infrastructure. These nickel-molybdenum alloys provide exceptional resistance to hydrochloric acid and reducing chemical media where conventional fastening materials may experience rapid corrosion.
Hastelloy B2 / B3 fasteners are selected for concentrated hydrochloric acid, sulfuric acid, hydrogen chloride gas, and other corrosive process conditions. They support reliable operation in chemical reactors, acid transfer systems, pressure vessels, and refinery equipment where corrosion prevention, safety, and service life are critical.
Aurum Overseas supplies Hastelloy B2 / B3 fasteners to major international markets including the USA, Canada, Mexico, UAE, Saudi Arabia, Germany, France, Italy, Spain, Netherlands, Qatar, and Oman, supporting EPC contractors, manufacturers, distributors, and industrial buyers with reliable export supply.
Nickel-Molybdenum Metallurgy and Mechanical Properties of Hastelloy B2 / B3 Fasteners
Hastelloy B2 and B3 use high molybdenum content for strong resistance to hydrochloric acid and other reducing chemical environments. Their low-carbon composition also supports corrosion resistance after fabrication and welding.
Chemical Composition of Hastelloy B2 / B3 Fasteners
| Element | B2 (%) | B3 (%) | Functional Role |
|---|---|---|---|
| Nickel | Balance | Balance | Base corrosion resistance |
| Molybdenum | 26 – 30 | 28 – 32 | Hydrochloric acid resistance |
| Iron | ≤ 2.0 | ≤ 3.0 | Structural balance |
| Chromium | ≤ 1.0 | 1 – 3 | Controlled oxidation stability |
| Carbon | ≤ 0.02 | ≤ 0.01 | Reduced sensitization |
Mechanical Properties of Hastelloy B2 / B3 Fasteners
| Property | Hastelloy B2 | Hastelloy B3 |
|---|---|---|
| Tensile Strength | 760 MPa | 820 MPa |
| Yield Strength | 350 MPa | 370 MPa |
| Elongation | 40% | 45% |
| Hardness | 85 HRB | 90 HRB |
The alloys combine good ductility with corrosion resistance for aggressive chemical service requiring dependable structural performance.
Hastelloy B2 / B3 Fasteners for Hydrochloric and Reducing Acid Service
Hastelloy B2 / B3 fasteners provide outstanding resistance to hydrochloric acid and other non-oxidizing chemical media. They are suitable for acid-processing infrastructure where conventional stainless steel fasteners can experience rapid corrosion and metal loss.
The alloys are also used in sulfuric acid systems, hydrogen chloride gas, acetic acid processing, acid storage tanks, reactors, heat exchangers, pickling systems, and severe chemical transfer equipment.
ASTM, ASME, EN and NACE Standards for Hastelloy B2 / B3 Fasteners
Hastelloy B2 / B3 fasteners are supplied to major international standards for chemical processing, refinery, petrochemical, and industrial applications.
| Region | Standards | Key Specifications |
|---|---|---|
| USA | ASTM / ASME | ASTM B335, ASTM B564, ASME SB335 |
| Europe | EN / DIN | EN 2.4617, EN 2.4600 |
| Gulf Countries | NACE / ISO | NACE MR0175, ISO 15156 |
| Industrial Projects | EPC Standards | ADNOC, Aramco, SABIC Standards |
Hastelloy B2 / B3 Fasteners Sizes, Threads and Types
Hastelloy B2 / B3 fasteners are available in metric and imperial configurations, with custom dimensions and machining for project-specific requirements.
Available Fastener Types
Bolts
Studs
Nuts
Washers
Screws
Threaded Bar
Sizes and Threads
| Parameter | Availability |
|---|---|
| Diameter Range | M3 to M56 and above |
| Thread Standards | Metric, UNC, UNF |
| Length | Standard and Custom |
| Thread Form | Rolled / Cut |
| Custom Machining | Available |
| Special Requirements | Project-Based |
Hastelloy B2 / B3 Fasteners for Chemical Reactors and Petrochemical Industries
Hastelloy B2 / B3 fasteners are used in chemical reactors, acid transfer systems, pickling units, chemical pipelines, and pressure equipment exposed to hydrochloric acid and reducing chemicals.
In refinery and petrochemical facilities, they support sulfuric acid systems, hydrocarbon processing units, chemical handling infrastructure, and corrosive process equipment where corrosion prevention and operational continuity are important.
- Chemical reactors
- Acid transfer systems
- Pickling units
- Chemical pipelines
- Pressure equipment
- Sulfuric acid systems
- Hydrocarbon processing units
- Corrosive process equipment
Global Export Markets
Aurum Overseas supplies its products to major industrial and engineering markets worldwide, supporting EPC contractors, manufacturers, distributors, and industrial buyers with reliable supply and export logistics.
USA
Canada
Mexico
UAE
Saudi
Arabia
Germany
France
Italy
Spain
Netherlands
Belgium
Poland
Qatar
Oman
Kuwait
Bahrain
Quality Assurance, PMI Testing and Third-Party Inspection
Hastelloy B2 / B3 fasteners can be supplied with EN 10204 3.1/3.2 certification, PMI testing, chemical composition verification, dimensional inspection, and mechanical testing.
Third-party inspection can also be arranged according to refinery, EPC, offshore, and petrochemical project requirements.
Testing and Certification
| Quality Requirement | Availability |
|---|---|
| EN 10204 3.1 | Available |
| EN 10204 3.2 | Available |
| PMI Testing | Available |
| Chemical Analysis | Available |
| Mechanical Testing | Available |
| Dimensional Inspection | Available |
| Third-Party Inspection | On Request |
Export Packaging and International Logistics Support
Hastelloy B2 / B3 fasteners are packed using protective export materials to reduce moisture exposure, contamination, and mechanical damage during international transportation.
Export Packaging
| Packaging Type | Application |
|---|---|
| VCI Protection | Corrosion Protection |
| Sealed Export Cartons | Moisture Protection |
| Wooden Export Crates | Bulk Shipments |
| Fumigated Crates | International Export |
| Custom Project Packing | Available |
Proper labeling, traceability, and export documentation support reliable delivery across USA, Europe, and Gulf countries.
Why Chemical Processing and Refinery Buyers Choose Aurum Overseas
Aurum Overseas supplies Hastelloy B2 / B3 fasteners for severe acid-processing, refinery, petrochemical, and chemical applications, with focus on material consistency, certification, and international export support.
Our capabilities support bulk procurement, custom manufacturing, inspection requirements, and project-specific fastening solutions for corrosion-critical industrial systems.
Hastelloy B2 / B3 Fasteners Comparison for Corrosion-Critical Applications
Hastelloy B2 / B3 fasteners are specifically suited to reducing acids and hydrochloric acid environments, while Hastelloy C22 is better suited to broader mixed and oxidizing chemical conditions.
For applications involving oxidizing chemicals, wet chlorine, and chloride-rich media, Hastelloy C22 Fasteners Suppliers & Exporters can be evaluated based on the process chemistry and operating conditions.
| Comparison Factor | Hastelloy B2 / B3 | Hastelloy C22 |
|---|---|---|
| Primary Service | Reducing acids | Mixed corrosive media |
| Hydrochloric Acid | Excellent | Excellent |
| Oxidizing Media | More Limited | Excellent |
| Wet Chlorine | More Limited | Excellent |
| Molybdenum Content | Very High | High |
| Pitting Resistance | Excellent | Excellent |
| Typical Applications | Acid processing, reactors | Chemical, offshore, pollution control |
FAQs – Hastelloy B2 / B3 Fasteners
Hastelloy B2 / B3 fasteners contain high molybdenum content that provides exceptional resistance to hydrochloric acid and reducing chemical environments. This makes them highly suitable for acid-processing plants, chemical reactors, and refinery systems where conventional alloys experience rapid corrosion failure.
Hastelloy B3 fasteners provide improved thermal stability and better resistance to stress-related corrosion compared to B2. They also offer enhanced fabrication performance and greater resistance to structural degradation caused by thermal cycling and welding operations.
Yes, Aurum Overseas supplies Hastelloy B2 / B3 fasteners across USA, Europe, and Gulf countries with complete export documentation, certifications, and project-based logistics support for industrial and EPC applications.
Yes, Hastelloy B2 / B3 fasteners are widely used in refinery systems, sulfuric acid plants, petrochemical infrastructure, and chemical processing facilities exposed to aggressive reducing chemicals and severe corrosion environments.
We provide EN 10204 3.1/3.2 certification along with PMI testing reports, dimensional inspection reports, and mechanical testing documentation. Third-party inspection services can also be arranged according to project specifications.
Fasteners are packed using VCI protective materials, sealed export packaging, and fumigated wooden crates to prevent corrosion and transit damage. Proper labeling and traceability systems ensure safe global transportation and customs clearance.
Request a Quote for Hastelloy B2 / B3 Fasteners
Need Hastelloy B2 / B3 fasteners for acid-processing, refinery, chemical, or petrochemical applications? Aurum Overseas offers bulk supply, custom manufacturing, certification, third-party inspection, and global delivery.
Contact us for a quotation based on your specifications, quantity, and delivery location.
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