Hastelloy B-3 Flange (UNS N10675 / W.Nr. 2.4600)
High-strength corrosion-resistant alloy Flange for chemical and petrochemical processing
As a professional Hastelloy pipe fitting supplier, SEATHER TECHNOLOGY manufactures and supplies a full range of Hastelloy B-3 flanges with stable quality and reliable performance.
HASTELLOY® B-3® alloy (UNS N10675) is a high-performance nickel-molybdenum alloy designed for service in strong reducing environments. It exhibits outstanding resistance to hydrochloric acid, sulfuric acid, and other aggressive media, along with excellent thermal stability and structural integrity. These characteristics make Hastelloy B-3 flanges ideal for use in chemical processing, petrochemical, marine engineering, pharmaceutical, and other corrosive industrial applications.
Manufacturing & Standards
SEATHER manufactures Hastelloy B-3 flanges strictly in accordance with ASTM B462 standards. All flanges are produced from high-quality raw materials and processed using advanced forging and machining technologies to ensure precise dimensions, consistent microstructure, and excellent mechanical properties.
Each flange undergoes strict quality inspection, including chemical composition verification, dimensional checks, and surface quality control, to ensure full compliance with international standards and project requirements.
Flange Types & Supply Range
The most commonly supplied Hastelloy B-3 flanges include:
Weld Neck (WN) Flanges
Blind (BL) Flanges
In addition, we can supply other flange types upon request, such as slip-on, socket weld, threaded, and lap joint flanges, according to customer specifications, drawings, or applicable standards.
Product Advantages
Hastelloy B-3 flanges supplied by SEATHER offer:
Exceptional resistance to strong reducing acids
Excellent high-temperature stability and corrosion resistance
Reliable sealing performance in harsh service environments
High dimensional accuracy and good weldability
Service & Support
SEATHER TECHNOLOGY provides comprehensive pre-sales technical support, helping customers select the most suitable flange type, size, and standard for their applications. Full material test certificates and inspection documents can be provided with each order.
With professional manufacturing capability, strict quality control, and responsive service, SEATHER TECHNOLOGY is your reliable global partner for Hastelloy B-3 flanges.
Hastelloy B-3 Flange (UNS N10675) Specifications & Srtandard
- NPS: 1/2 ~ 48″
- SCH: 5 ~ XXS
- Classification: TH (Threaded) flange, SO (Slip-On Welding) flange, BL (Blind) flange, SW (Socket Welding) flange, LJ (Lapped) flange, WN (Welding Neck) flange
- Customized size needs to be confirmed with our team
- Pressure Level: 150 – 2500lbs
- Grades: B-3/ UNS N10675 / W.Nr. 2.4600
- Standards: ASTM B462
ASME B16.5
MSS SP-25 - Brand: SEATHER TECHNOLOGY, Special Metals(SMC), HAYNES International, VDM Metals, ATI, etc.
Hastelloy B-3 Flange (UNS N10675) Applications & Usages
Hastelloy B-3 alloy can be used in a variety of applications including:
- The production and processing of many concentrated acids
- Mechanical components and vacuum furnaces
- Chemical processing
What is Hastelloy B-3 (UNS N10675)
Alloy B-3 also referred to as the UNS N10675/W.Nr. 2.4600 alloy.
Alloy B-3 is similar to alloy B-2 in terms of resistance to non oxidizing agents, resistance to stress corrosion & pittings, non formation of grain boundry.
Like other nickel alloys (in the mill annealed condition), it is ductile, can be formed and welded, and resists stress corrosion cracking in chloride-bearing solutions.
Also, it is able to withstand fluoride-bearing media and concentrated sulfuric acid, both of which result in damage to zirconium alloys.
Alloy B-3 is widely used in numerous chemical process industry, especially in the construction of reaction vessels for pure, reducing acid service.
B-3 alloy is available in the form of plates, sheets, strips, billets, bars, wires, pipes, tubes, and coated electrodes.
Hastelloy B-3 Flange (UNS N10675) Chemical Composition
| Grade | Standard | C | Si | Mn | Mo | Co | Cr | Ni | Ti |
| Hastelloy B-3 | ASTM | ≤0.01 | ≤0.10 | ≤3.00 | 27.0-32.0 | ≤3.0 | 1.0-3.0 | ≥65 | ≤0.20 |
Hastelloy B-3 Flange (UNS N10675) Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 9.22 g/cm3 | 1418°C (2585 °F) | 680Mpa | 270Mpa | Min 53 |
Metal Cutting Service
Custom Metal Cutting Services For Diverse Industries
CNC Machining Services
Custom CNC machining parts in nickel alloy and stainless steel delivery in as fast as 3 days
Sheet Metal Fabrication
SEATHER’s custom sheet metal fabrication services offer a fast and cost-effective solution for your projects.
Metal Welding Service
Seather provides some of the best solutions ranging from custom metal welding and related services.
More Information About Hastelloy B-3 Flange (UNS N10675)
When you choose to buy Hastelloy B-3 flange (UNS N10675), there have some important points we need to know before we get started.
Hastelloy B-3 Flange Features (UNS N10675)
- Superior Acid Resistance
- Enhanced Thermal Stability
- Corrosion Resistance
- Reduces Media Attack
- Fabrication Friendly
- Versatile Applications
How to Purchase Hastelloy B-3 Flange (UNS N10675)
When purchasing alloy flanges, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your project needs.
Here’s what you need to provide:
1. Material: Specify the flange material, such as nickel alloy B-3. You can refer to standards such as ASTM and ASME.
2. Type: Determine the type of flange needed, such as butt welding flange, threaded flange, slip-on flange, blind flange, etc.
3. Size: Specify the flange’s nominal diameter (DN) and pressure rating (PN).
4. Quantity: Provide the exact number of flanges required for an accurate quotation.
5. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
6. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
7. Special requirements: Specify any special surface treatment, coating, corrosion resistance requirements, etc.
8. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
9. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing flanges and ensure that you receive high-quality products that meet your requirements.
Conclusion
We have introduced our products briefly. If you want to know more about it, you can check the article here Hastelloy Alloy B-3: Composition, Properties and Applications.
If you need to purchase alloy B-3 products, please get in touch with us immediately.
Trademark Notices:
Inconel®, Incoloy®, and Monel® are registered trademarks of Special Metals Corporation.
Hastelloy® is a registered trademark name of Haynes International, Inc.
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