Hastelloy B-2 N10665/2.4617/ NS3202 Plate/Strip/Bar/Rod/Forging Suitable For Acidic Environments In Heat Recovery Systems

Hastelloy B-2 (UNS N10665 / W.Nr. 2.4617 / NS3202) is a nickel-molybdenum alloy known for its excellent resistance to reducing environments such as hydrochloric, hydrobromic, and sulfuric acids. It has exceptional resistance to pitting, stress corrosion cracking, and knife-line attack, making it ideal for chemical processing industries. Available in plate, strip, bar, rod, and forging forms, Hastelloy B-2 maintains high strength and toughness across a wide temperature range. It is not recommended for oxidizing media but performs exceptionally in controlled environments. The alloy is easily fabricated and welded, though care must be taken during heat treatment. Typical applications include reactors, heat exchangers, and piping in aggressive chemical service.

Key Features:

1. Excellent Corrosion Resistance

• Superior resistance to hydrochloric acid (HCl) at all concentrations and temperatures.
• Outstanding resistance to sulfuric, acetic, formic, and phosphoric acids.
• Effective against wet hydrogen chloride and acidic chloride environments.

2. Resistance to Stress Corrosion Cracking

• Low carbon and silicon content helps minimize carbide precipitation during welding, reducing the risk of intergranular corrosion.
• Excellent resistance to stress corrosion cracking and pitting corrosion.

3. High Thermal Stability

• Maintains strength and corrosion resistance at elevated temperatures up to around 850°C (1560°F).

4. Good Fabricability

• Can be hot and cold worked, machined, welded, and forged.
• Commonly processed using standard methods, but must avoid excessive cold working to prevent work hardening.

5. Purity and Weld Integrity

• Improved metallurgy over earlier Hastelloy grades: cleaner structure, improved thermal stability, and less susceptibility to fabrication-induced problems.

6. Typical Forms

• Supplied as plates, strips, bars, rods, and forgings for flexibility across industrial applications.

General Characteristics

• Excellent resistance to hydrochloric acid at all concentrations and temperatures.
• Resists pitting, stress corrosion cracking, and crevice corrosion.
• Not suitable for oxidizing environments (e.g., nitric acid, ferric/ cupric salts).

Applications by Form

Plate & Strip

Used in large-area corrosion-resistant structures:

• Reactor vessels and columns in chemical processing
• Acid production equipment
• Heat exchanger shells
• Lining for tanks and containers transporting or storing strong acids

Bar & Rod

Commonly machined into components needing mechanical strength and corrosion resistance:

• Pump shafts and impellers
• Valve bodies and stems
• Fasteners for corrosive service
• Support pins and stirrers in acidic environments

Forgings

Ideal for custom-shaped, high-integrity parts:

• Flanges, fittings, and pressure vessel parts
• Custom components for reactors and acid handling systems
• Hammered or pressed parts used in critical applications requiring good metallurgical properties

Industries That Use Hastelloy B-2

• Chemical processing
• Pharmaceutical manufacturing
• Petrochemical plants
• Pulp & paper industry (where bleaching uses strong acids)
• Waste treatment systems handling strong reducing chemicals

Company Overview:

Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and preci.sion of our products. We have the tightest tolerances and deliver within a few days to a fewweeks. As a result, we have become the leading alloy wire supplier in the industry.

Senphus Subsidiaries:

• Jiangyin Chengxin Alloy Material Co., Ltd.
• Jiangyin Senphus Electrical Materials Co., Ltd.
• Jiangsu Xiangcheng Supply Chain Management Co., Ltd.

Jiangyin Chengxin Alloy Material Co., Ltd.: With nearly 20 years of experience, Jiangyin Chengxin is a leading alloy wire manufacturer in China. We offer a wide range of services, from fine wire drawing to resistance wire manufacturing. Our specialty lies in the quality and precision of our products, achieving the tightest tolerances and delivering orders within days to weeks. As a result, we have established ourselves as the premier supplier of alloy wire in the industry.

Our product range includes:

• Copper-nickel alloys (CuNi1-CuNi44)
• Karma (Nikrothal L/Evanohm/Alloy 800)
• Manganin and Constantan
• Nickel-chromium alloys
• Thermocouple alloys (Type K, N, E, T, J)
• Thermocouple extension wire
• PTC thermistor resistance alloy
• Pure nickel wire and Monel alloy

These alloys are available in various forms, including wire, ribbon, stranded, and enamelled. Major applications include seat heating, underfloor heating, military projects, aerospace, household appliances, heating wire, mechanical and electrical plants, and temperature instruments. Our manufacturing processes are ISO 9001:2015 certified, and we specialize in fine and ultra-fine wire drawing, offering wire diameters from 0.025 mm (0.001") to 13 mm (0.51") in small batches, medium volumes, and mass production. We maintain a comprehensive quality inspection system, including in-house chemical analysis, chromatographic analysis, metallurgical analysis, pinhole tests, wire construction tests, and tension tests to ensure the highest quality standards.

Senphus Electrical Material Co., Ltd.: Founded in 2003, Senphus Electrical Material Co., Ltd. integrates research, manufacturing, and sales of electric heating alloys, heating cables, heating wires, and heating products. Leveraging over a decade of technical expertise in heating alloy wire, we have adopted advanced heating cable technology and machinery, successfully developing heating cables, temperature controllers, and temperature control systems suitable for building heating, pipe insulation, outdoor snow melting, wind power blade production, car seat heating, and healthcare applications.

The company is recognized as a high-tech enterprise in Jiangsu Province and a small giant enterprise in Jiangyin City, specializing in innovative technologies. We operate the "Wuxi Heating Cable Engineering Technology Research Center" and collaborate with experts from renowned domestic universities. Our portfolio includes 5 invention patents and over 30 utility model patents, showcasing our strong research and development capabilities.

With an annual output exceeding 1,000 tons of thermal alloy wire and an output value of approximately 105 million yuan, our products are well-received in markets such as the UK, Italy, Canada, Peru, and Spain. Our heating cables generate an annual output value of over 80 million yuan, with exports to Germany, Japan, the United States, Malaysia, Denmark, Brazil, and other countries.

The company has successfully passed multiple quality management system certifications, including IATF 16949, ISO 9001, ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). Our heating cables and related products have also obtained test reports from the Shanghai Cable Research Institute Test Center and received certifications such as UL (United States), VDE (Germany), CE (European Union), and RoHS.

Commitment to Quality: We adhere to the business commitment of "Reputation First, Quality First, Customer First" and uphold the quality policy of "Integrity-Based, Quality-Oriented, Excellent Service." We are dedicated to providing accurate products and professional services, and we look forward to collaborating sincerely with you to achieve mutual success.