Alloy B3 tubes are ideal for heat exchanges, as they can handle harsh reducing acids (like HCl and sulfuric acid). They maintain their strength and stability even when temperatures change.
ASTM B622 Alloy B3 Seamless Tube Manufacturer
We at Zhejiang Xintongda Special Steel (XTD) are a multiple international certified manufacturer and supplier of Alloy B3 seamless tubes. These tubes are used in crucial industrial applications. Alloy B3 is a high-performance nickel-molybdenum alloy with around 65% nickel, 27-32% molybdenum, and 1-3% iron. These seamless tubes are manufactured using advanced hot working, cold finishing, and solution annealing techniques to provide a consistent and stable structure. Each Alloy B3 tube we supply meets rigorous inspection, testing, and certification standards per ASTM B622. The alloy resists stress corrosion cracking and has strong thermal stability and ductility. These features ensure Alloy B3 is ideal for rigorous industries where material integrity is essential. Our tubes are used in power generation, oil and gas, and other sectors that deal with harsh acidic environments. To meet steady global demand, we sustain an annual production capability of 25,000 tons and use advanced manufacturing processes.
Product specifications:
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Standard
ASTM B622
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OD Range
6-457 mm
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Thickness
1-65 mm
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Length
≤ 22 m
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Technical Data
Technical Data
Alloy B3 Seamless Nickel Alloy Tube Manufacturing Process
We manufacture Alloy B3 seamless tubes using hot extrusion or rotary piercing of nickel-molybdenum billets. Then, cold drawing (or cold pilgering) is designed to get the exact dimensions. The tubes undergo solution annealing to regain corrosion resistance. Our products are then pickled, straightened and undergo eddy current and hydrostatic testing. This ensures structural integrity and adherence to ASTM requirements. Study the whole manufacturing process by visiting this page.
Characteristics of a Seamless Alloy B3 Tube
Our Seamless Alloy B3 tube consists of 6 key characteristics. These include excellent ductility, resistance to pitting and stress-corrosion cracking, and other features.
- Excellent Ductility: The superior ductility of Alloy B3 makes it extremely flexible and easy to form into complex shapes during manufacturing. This feature is essential for the development of components in complex systems. The installation of piping systems for chemical plants reduces the risk of material failure during fabrication and bending.
- Resistance to Pitting and Stress-Corrosion Cracking: The material is resistant to pitting and stress corrosion cracking (SCC). The Alloy B3 tube is particularly reliable for procedures where solutions contain chlorides. This ensures durability and safety during operation.
- Knife-Line and Heat-Affected Zone Resistance: Alloy B3 is highly resistant to knife-line and heat-affected zone (HAZ) damage after welding. This ensures corrosion resistance over the manufactured component. It is essential for tubes that handle sulfuric acid.
- Hydrochloric Acid Resistance: Alloy B3 (ASTM B622 UNS N10675) is highly resistant to hydrochloric acid. This makes it suitable for non-oxidising environments across various temperatures.
- Superior Thermal Stability: It retains outstanding ductility even after exposure to mild temperatures. This surpasses previous Alloy B alloys by maintaining structural integrity after heat processing.
- Workability: Seamless Alloy B3 tubing provides excellent workability, maintaining ductility and formability in its mill-annealed condition. We produce this tube in various forms and sizes required by industrial clients.
Equivalent Material of B3 Seamless Nickel Alloy Tube
Alloy B3 is recognised globally under UNS N10675 and Werkstoff NR. 2.4600 equivalent designations for various industrial requirements.
| GRADE | UNS | GB | JIS | ISO | DIN/EN | GOST | |
| ISC | NEW | ||||||
| Alloy B-3 Tube | N10675 | - | NS3203 | - | - | 2.4600 | - |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% PMI
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
- Laboratory Test Certificate from the Government-Approved Lab
Which Industries Commonly Use Alloy B3 Tubes?
Alloy B3 tubes are essential components in industries where resistance to non-oxidising acids and superior material integrity are required. The 5 key industry applications of UNS N10675 seamless tubes are mentioned below:
Heat Exchanger Tubes for Acidic Chemical Media
These tubes are used in heat exchangers for acidic chemical media in the chemical processing industry. It protects critical heat transfer equipment from premature failure.
Oil & Gas
These tubes are used in downhole equipment and sour gas applications. The alloy's resistance to stress corrosion cracking is critical in environments containing hydrogen sulfide and chlorides.
Power Generation
Tubes are often used in power generation facilities, particularly those that handle coal gasification, or waste streams. It handles corrosive flue gas desulfurisation systems and other demanding functions.
Marine Engineering
Its resistance to chloride-induced corrosion makes it crucial in marine engineering. The equipment requires high reliability while being exposed to seawater or marine atmospheres.
Nuclear Industry
Alloy B3 is used in nuclear processing units that manage radioactive waste, or corrosive solutions, where material failure is avoided.
Frequently Asked Questions
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What makes Alloy B3 tubes ideal for heat exchanger applications?
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What are the corrosion resistance properties of Alloy B3 tubes?The corrosion resistance properties of Alloy B3 tubes include resistance to pitting and stress in chloride solutions. The alloy performs well against non-oxidising media such as sulfuric and hydrochloric acids.